Summary of Significant Accounting Policies | 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of presentation and use of estimates The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP). These accounting principles require management to make certain estimates and assumptions that affect the amounts in the accompanying financial statements. Actual results may differ from those estimates. The Group bases its estimates on past experience and various other factors believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Significant accounting estimates reflected in the Group's financial statements include, but are not limited to, consolidation of VIEs, revenue recognition, valuation allowance for deferred tax assets, valuation of share-based compensation, and impairment of long-lived assets. Actual results may differ materially from those estimates. 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES – continued Principles of consolidation The accompanying consolidated financial statements include the financial information of the Company and its subsidiaries, the VIEs and the VIEs' subsidiaries. All intercompany balances and transactions were eliminated upon consolidation. The VIE arrangements In order to comply with the PRC laws and regulations which prohibit or restrict foreign control of companies involved in provision of value-added telecommunication services, and certain other businesses, the Company conducts certain of its business through the VIEs. The Company through its wholly owned subsidiaries located in the PRC ("WFOEs") entered into a series of contractual agreements with the VIEs and their shareholders. Through below contractual agreements, the Company has (1) the power to direct the activities that most significantly affect the economic performance of the VIEs, and (2) the right to receive the economic benefit of the VIEs that could potentially be significant to the VIEs. As a result, the shareholders of the VIEs lack the power to direct the activities of the VIEs that most significantly impact the entity's economic performance, the obligation to absorb the expected losses, and the right to receive the expected residual returns of the entity. Accordingly, the Company is considered as the primary beneficiary of the VIEs, and the Company has consolidated the financial results of the VIEs and their subsidiaries in its consolidated financial statements. As of December 31, 2022, the VIEs included Shanghai Hexu, Beijing Qili, Beijing Yiqi Information, Beijing Yiqi Development and Guangzhou Qili Technology Co., Ltd. ("Guangzhou Qili"). Shanghai Hexu is the VIE that is material to the Group's business and operations since its establishment. The following is a summary of contractual agreements entered into by and among Shanghai WFOE, Shanghai Hexu and its respective shareholders. Exclusive Management Services and Business Cooperation Agreement Pursuant to the exclusive management services and business cooperation agreement among Shanghai WFOE, Shanghai Hexu and the shareholders of Shanghai Hexu, Shanghai WFOE has the exclusive right to provide or designate any third party to provide, among other things, technical support and consultation services, client relationship building up services, perfection of management structure and strategic consultation services to Shanghai Hexu and its subsidiaries. In exchange, Shanghai Hexu and its subsidiaries pay service fees to Shanghai WFOE at an amount determined by Shanghai WFOE in its sole discretion and can be adjusted by Shanghai WFOE unilaterally. Without the prior written consents of Shanghai WFOE, Shanghai Hexu is prohibited from engaging any third party to provide any services contemplated by this agreement and can neither dispose any important asset in any way nor change the equity structure on itself. The agreement has an initial term of ten years and shall automatically renew at the end of each term for a further term of ten years, unless otherwise terminated by Shanghai WFOE in its sole discretion with 10 days' prior written notice. 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES – continued The VIE arrangements – continued Equity Interest Pledge Agreement Under the equity interest pledge agreement among Shanghai WFOE, Shanghai Hexu and its shareholders, Shanghai Hexu's shareholders pledged all of their equity of Shanghai Hexu to Shanghai WFOE as security for performance of the obligations of Shanghai Hexu and its shareholders and their spouses, as applicable, under the exclusive call option agreement, the exclusive management services and business cooperation agreement, proxy agreement and powers of attorney and consent letters. If any of the specified events of default occurs, Shanghai WFOE can exercise the right as pledgee to enforce the pledge by, among other ways, auction or sale of the pledged equity interests. The equity interest pledge agreement will remain in effect until the earlier of (i) the fulfillment of all the obligations under the exclusive call option agreement, the exclusive management services and business cooperation agreement, proxy agreement and powers of attorney, and consent letters, (ii) the exercise of right of pledge by Shanghai WFOE pursuant to the terms and conditions of the equity interest pledge agreement, or (iii) that the shareholders of Shanghai Hexu transfer all the equity held in Shanghai Hexu to Shanghai WFOE or its designee(s) pursuant to the exclusive call option agreement. Exclusive Call Option Agreement Under the exclusive call option agreement among Shanghai WFOE, Shanghai Hexu and its shareholders, each of the shareholders of Shanghai Hexu irrevocably granted Shanghai WFOE a right to purchase or designated third party to purchase equity interests in Shanghai Hexu at a purchase price of RMB 0.001 thousand or equal to the lowest price permissible by the PRC laws and regulations. If the purchase price is higher than RMB0.001 thousand, the shareholders of Shanghai Hexu shall promptly give all considerations they received from the exercise of the options to Shanghai WFOE or their designee(s). Shanghai Hexu and its shareholders covenanted that, without Shanghai WFOE's prior written consents, they will not, among other things, (i) transfer or otherwise dispose of their equity interests in Shanghai Hexu; (ii) create any pledge or any other third party's right on their equity interests in Shanghai Hexu; (iii) change Shanghai Hexu's registered capital or merge Shanghai Hexu with other entities; (iv) dispose or force the management to dispose any material assets of Shanghai Hexu, except for the disposal of the assets that are treated as necessary for Shanghai Hexu's daily business operations; (v) cause Shanghai Hexu to terminate or force the management to terminate any material contracts to which Shanghai Hexu is a party; (vi) appoint or replace any director, supervisor or management of Shanghai Hexu; (vii) declare or distribute dividends; (viii) terminate, liquidate or dissolve Shanghai Hexu; (ix) amend Shanghai Hexu's articles of association; (x) allow Shanghai Hexu to incur any debts, or any other form of liabilities other than the liabilities incurred for usual course of business operation; (xi) lend funds or provide guarantee to third party in any form. The agreement has an initial term of ten years and shall automatically renew at the end of each term for a further term of ten years, unless otherwise terminated by Shanghai WFOE in its sole discretion with 10 days ’ prior written notice. Under no circumstances can Shanghai Hexu or its shareholders terminate the exclusive call option agreement. 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES – continued The VIE arrangements – continued Proxy Agreement and Powers of Attorney Pursuant to the proxy agreement and powers of attorney executed by Shanghai Hexu's shareholders, each of them irrevocably authorized Shanghai WFOE to act on their respective behalf as exclusive agent and attorney, to the extent permitted by law, with respect to all rights of shareholders concerning all the equity interest and sponsor interest held by each of them in Shanghai Hexu or its subsidiaries, including but not limited to proposing to convene or attend shareholder meeting, exercising all the rights as shareholders (including but not limited to voting rights, nomination rights, appointment rights, the right to sell or transfer of all the equity interest held in part or in whole). The agreement will remain effective within the operating period of Shanghai Hexu, unless otherwise unilaterally terminated by Shanghai WFOE in its sole discretion. Consent Letters Pursuant to the consent letters executed by each shareholder of Shanghai Hexu and its spouse, each signing shareholder and its spouse have confirmed and agreed to the execution of the exclusive call option agreement, the exclusive management services and business cooperation agreement, proxy agreement and powers of attorney, and the equity interest pledge agreement described above by the applicable shareholders. They further undertook not to hinder the disposal of the equity and not to make any assertions in connection with the equity of Shanghai Hexu held by the applicable shareholders, and confirm that the applicable shareholders can perform the relevant transaction documents described above and further amend or terminate such transaction documents without the authorization or consent from such spouses. The spouse of each applicable shareholder agrees and undertakes that if she obtains any equity of Shanghai Hexu held by the applicable shareholder for any reasons, she would be bound by the transaction documents described above. In 2021, to expand the Group's business operations, the Company set up three wholly owned subsidiaries, Guangzhou Qixiang, Guangzhou Qixuan and Beijing Yiqi Hangfan (collectively "2021 WFOEs"), in the PRC and further entered into a series of contractual agreements with Beijing Qili, Beijing Yiqi Information, Beijing Yiqi Development (collectively "2021 VIEs") and their respective shareholders, respectively, in which the terms included are substantially similar. Through these contractual agreements, the Company has (1) the power to direct the activities that most significantly affect the economic performance of 2021 VIEs, and (2) the right to receive the economic benefit of 2021 VIEs that could potentially be significant to 2021 VIEs. Accordingly, the Company is considered as the primary beneficiary of the 2021 VIEs, and has consolidated the financial results of 2021 VIEs in its consolidated financial statements. 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES – continued The VIE arrangements – continued The following is a summary of the contractual agreements entered into by and among 2021 WFOEs, 2021 VIEs and their respective shareholders. Exclusive Management Services and Business Cooperation Agreement Pursuant to the exclusive management services and business cooperation agreement entered into by and among 2021 WFOEs, 2021 VIEs and their shareholders, 2021 WFOEs were appointed as the exclusive technology and service providers to 2021 VIEs and their subsidiaries of comprehensive corporate management consulting, intellectual property licensing, technical support and business support services, which are specified by 2021 VIEs and their subsidiaries in accordance with scope of their business. The service fees shall be determined by 2021 WFOEs, if not violating the mandatory provisions of PRC laws, in accordance with the specific service content and service targets, as well as 2021 VIEs and their subsidiaries’ income and customer volume in a specific period, and shall be the balance of general income deducting costs, taxes and other reserved fees stipulated by laws and regulations. In addition, 2021 WFOEs are the sole and exclusive providers of services under the exclusive management services and business cooperation agreement. Without the prior written consent of 2021 WFOEs, during the effective period of the exclusive management services and business cooperation agreement, 2021 VIEs, their subsidiaries and their shareholders shall not directly and indirectly obtain the same or similar exclusive techniques and services as provided under the exclusive management services and business cooperation agreement from any third party, or establish any similar business cooperative relation with any third party with respect to the matters stipulated herein. Moreover, 2021 WFOEs have the exclusive proprietary rights to and interests in any and all intellectual property rights developed or produced by performance of the exclusive management services and business cooperation agreement. Without 2021 WFOEs’ consents, 2021 VIEs and their subsidiaries and their shareholders enjoy no rights other than those provided in the exclusive management services and business cooperation agreement. Further, 2021 VIEs and their subsidiaries grant to 2021 WFOEs an irrevocable and exclusive purchase right, which allows 2021 WFOEs to purchase, subject to compliance with the PRC laws, at their discretions, any or all of the assets and business of 2021 VIEs or their subsidiaries at the lowest price as permitted under PRC laws and regulations. The exclusive management services and business cooperation agreement shall remain in force during the business operation period of 2021 WFOEs and 2021 VIEs unless otherwise terminated earlier by consensus of the all parties to the exclusive management services and business cooperation agreement. 2021 WFOEs have the sole discretion and right to terminate the exclusive management services and business cooperation agreement with written notice at any time. Without 2021 WFOEs’ written consents, 2021 VIEs, their subsidiaries and their shareholders have no right to terminate the exclusive management services and business cooperation agreement. 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES – continued The VIE arrangements – continued Equity Interest Pledge Agreement Under the equity interest pledge agreement entered into by and among 2021 WFOEs, 2021 VIEs and their shareholders, 2021 VIEs and their shareholders pledged all of their equity interests in 2021 VIEs to 2021 WFOEs as security for performance of the obligations of 2021 VIEs and their shareholders, as applicable, under the exclusive management services and business cooperation agreement, the exclusive call option agreement, the powers of attorney, and consent letters (collectively the “Master Agreements”). The pledge thereunder shall be effective from the date of registration of the pledge with competent governmental authorities to the date on which all the Master Agreements are completely performed, invalidated or terminated. In the term of pledge, if 2021 VIEs or their shareholders fail to perform any of their obligations under the equity interest pledge agreement or the Master Agreements, or in case of occurrence of other specified events, 2021 WFOEs shall have the right but not obligated to dispose the pledged equity interest in accordance with the provisions of the equity interest pledge agreement. 2021 VIEs and their shareholders undertake that, without the prior written consent of 2021 WFOEs, they will not transfer, or create or allow any encumbrance on the pledged equity interests. 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES – continued The VIE arrangements – continued Exclusive Call Option Agreement Under the exclusive call option agreement entered into by and among 2021 WFOEs, 2021 VIEs and their shareholders, 2021 WFOEs have the exclusive, unconditional and irrevocable right to require the shareholders of 2021 VIEs, upon occurrence of the following situations and subject to the requirements by 2021 WFOEs, to transfer any or all of the equity interest in 2021 VIEs held by the shareholders to them and/or a third party designated by them for free or considerations equivalent to the minimum purchase price permitted under the PRC laws and regulations: (1) 2021 WFOEs or the third party designated by them are permitted to hold any or all of the equity interest in 2021 VIEs under the PRC laws; or (2) subject to the PRC laws, any situation as 2021 WFOEs think is appropriate or necessary. The shareholders of 2021 VIEs agree that they will return to 2021 VIEs, 2021 WFOEs or its designated party any consideration received, in the event that 2021 WFOEs exercises the option under the exclusive call option agreement to acquire such equity interest. In addition, shareholders of 2021 VIEs undertake that, subject to the PRC laws and regulations and after taxes required by PRC laws and regulations have been paid, before their transferring the equity interest in 2021 VIEs to 2021 WFOEs, they shall deliver the dividends, bonus, or any other property distributed from 2021 VIEs to 2021 WFOEs or any third party designated by 2021 WFOEs as soon as possible and within three (3) days after receipt of such dividends, bonus or any other property. 2021 VIEs and their shareholders covenant that, without 2021 WFOEs’ prior written consents, among other things, they shall not (i) transfer any equity interest in 2021 VIEs to any third party, or create any pledge, mortgage, guarantee, or any other right in the benefit of any third party in the equity interest in 2021 VIEs held by them, except the pledge provided in the equity pledge agreement by and among 2021 WFOEs, 2021 VIEs and their shareholders, (ii) supplement, change or amend the articles of association and bylaws of 2021 VIEs in any manner, or increase or reduce registered capital or change structure of registered capital of 2021 VIEs in any other manner, (iii) enter into any material contract or change the scope of business of 2021 VIEs, (iv) terminate any material contract to which 2021 VIEs are parties or entered into any agreement that affect 2021 VIEs’ financial status and asset value; (v) create, succeed, warrant or allow any debt except the account payable occurred in ordinary course, provided however, such account payable shall not be created by loan from any other person, (vi) announce or pay any dividend to the shareholders, (vii) sell, transfer, license or dispose in any manner any asset of 2021 VIEs, or allow the encumbrance hereon of any asset of 2021 VIEs, unless 2021 VIEs are able to prove that the such sale, transfer, license, deposition or encumbrance is necessary for their business in ordinary course and the transaction amount of one single transaction shall not higher than RMB 100 thousand. In the event that during the term of the exclusive call option agreement 2021 VIEs’ liquidate or dissolve, subject to the PRC laws and regulations, 2021 VIEs and their shareholders shall designate person recommended by 2021 WFOEs to constitute the liquidation group and manage the asset of 2021 VIEs. Further 2021 VIEs and their shareholders covenant that they shall appoint persons designated by 2021 WFOEs as directors, supervisors and/or senior management of 2021 VIEs, and/or remove the incumbent directors, supervisors and/or senior management of 2021 VIEs at 2021 WFOEs’ request and complete all relevant filing procedures. 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES – continued The VIE arrangements – continued Proxy Agreement and Powers of Attorney Pursuant to the respective powers of attorney executed by each of 2021 VIEs’ shareholders, each of 2021 VIEs’ shareholders irrevocably authorized 2021 WFOEs or their designee(s) to act on their respective behalf as proxy attorney and at such person’s own will, to the extent permitted by law, to exercise all rights of shareholders concerning all the equity interest held by each of them in 2021 VIEs, including but not limited to proposing to convene or attend shareholder meetings, signing relevant resolutions, nominating, voting and appointing on shareholder meetings, receiving dividends and selling, transferring, pledging or disposing of all the equity held in part or in whole, and exercising all other rights as shareholders. The powers of attorneys shall remain valid for the duration of the exclusive management services and business cooperation agreement. Consent Letters Pursuant to consent letters executed by the spouse of each 2021 VIEs’ shareholder, the spouse of each 2021 VIEs’ shareholder confirms that she is aware of and consents to the execution of the exclusive management services and business cooperation agreement, the exclusive call option agreement, the powers of attorney and the equity pledge agreement (collectively, the “Transaction Documents”) by her spouse, and agrees the disposal of the equity interests in 2021 VIEs in accordance with the Transaction Documents. Spouses covenant that they will not take any action at any time to hinder the disposal arrangement of such equity interest, including but not limited to claiming that the said equity interest belongs to her joint property with her spouse, and confirm that their spouses may further amend or terminate the Transaction Documents without the need for authorization or consent by them and they will execute all documents and take all actions necessary to ensure that the Transaction Documents (as amended from time to time) are properly performed. In addition, the spouse of each 2021 VIEs’ shareholder undertakes to unconditionally and irrevocably waive any rights or interests in the equity and corresponding assets of 2021 VIEs that may be granted to her, she will be bound by Transaction Documents as amended from time to time if she has obtained any equity interests, directly or indirectly, in 2021 VIEs for whatever reasons. In 2022, to further expand the Group's business operations, the Company set up Guangzhou Qili and further entered into a series of contractual arrangements with Guangzhou Qili and its shareholders through a wholly-owned subsidiary Guangzhou Qixiang Technology Co., Ltd., in which the terms included are substantially similar to the contractual agreements entered into by and among 2021 WFOEs, 2021 VIEs and their respective shareholders as disclosed above. Through these contractual arrangements, the Company has (1) the power to direct the activities that most significantly affect the economic performance of Guangzhou Qili, and (2) the right to receive the economic benefit of Guangzhou Qili that could potentially be significant to Guangzhou Qili. Accordingly, the Company is considered as the primary beneficiary of Guangzhou Qili, and has consolidated the financial results of Guangzhou Qili in its consolidated financial statements. 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES – continued The VIE arrangements – continued Risks in relation to VIE structure The Company believes that the contractual arrangements with the VIEs and VIE's shareholders are in compliance with existing PRC laws and regulations and are legally enforceable. However, the contractual arrangements are subject to risks and uncertainties, including: The VIEs and VIEs' shareholders may have or develop interests that conflict with the Group's interests, which may lead them to pursue opportunities in violation of the aforementioned contractual agreements. If the Group cannot resolve any conflicts of interest or disputes between the Group and the shareholders of the VIEs, the Group would have to rely on legal proceedings, which could result in disruption of its business, and there is substantial uncertainty as to the outcome of any such legal proceedings. The VIEs and VIE's shareholders could fail to obtain the proper operating licenses or fail to comply with other regulatory requirements. As a result, the PRC government could impose fines, new requirements or other penalties on the VIEs or the Group, mandate a change in ownership structure or operations for the VIEs or the Group, restrict the VIEs or the Group's use of financing sources or otherwise restrict the VIEs or the Group's ability to conduct business. The PRC government may declare the aforementioned contractual arrangements invalid. They may modify the relevant regulations, have a different interpretation of such regulations, or otherwise determine that the Group or the VIEs have failed to comply with the legal obligations required to effectuate such contractual arrangements. If the legal structure and contractual arrangements were found to be in violation of PRC laws and regulations, the PRC government may restrict or prohibit the Group's business and operations in China. The Group's ability to conduct its business may be negatively affected if the PRC government were to carry out any of the aforementioned actions. As a result, the Group may not be able to consolidate the VIEs and VIEs' subsidiaries in the consolidated financial statements as the Group may lose the ability to exert effective control over the VIEs and VIEs' shareholders, and the Group may lose the ability to receive economic benefits from the VIEs. The Group's business has been directly operated by the VIEs and their subsidiaries. As of December 31, 2021 and 2022, the VIEs and VIEs' subsidiaries accounted for an aggregate of 31 % and 35 % of the Group's consolidated total assets, respectively, and 54 % and 39 % of the Group's consolidated total liabilities, respectively. 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES – continued The VIE arrangements – continued Risks in relation to VIE structure – continued The following financial position and financial performance of the VIEs and VIEs' subsidiaries after the elimination of inter-company transactions and balances as of December 31, 2021 and 2022 and for the years ended December 31, 2020, 2021 and 2022 was included in the accompanying consolidated financial statements: As of December 31, 2021 2022 RMB RMB Cash and cash equivalents 239,520 154,544 Available-for-sale investments — 19,531 Accounts receivable — 32,934 Prepaid expenses and other current assets 115,333 110,131 Total current assets 354,853 317,140 Property and equipment, net 33,854 9,264 Right-of-use asset 89,853 12,244 Other non-current assets 8,138 3,070 Total non-current assets 131,845 24,578 Total assets 486,698 341,718 Accrued expenses and other current liabilities 93,115 35,220 Deferred revenue and customer advances, current 239,267 40,092 Operating lease liabilities, current 29,113 8,179 Total current liabilities 361,495 83,491 Operating lease liabilities, non-current 57,906 3,563 Total non-current liabilities 57,906 3,563 Total liabilities 419,401 87,054 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES – continued The VIE arrangements – continued Risks in relation to VIE structure – continued Year ended December 31, 2020 2021 2022 RMB RMB RMB Net revenues 1,229,126 2,166,327 498,602 Net income 301,096 797,867 309,653 The following are cash flows of the VIEs and VIEs' subsidiaries for the years ended December 31, 2020, 2021 and 2022: Year ended December 31, 2020 2021 2022 RMB RMB RMB Net cash generated from (used in) operating activities 347,773 ( 137,607 ) ( 135,866 ) Net cash used in investing activities ( 85,788 ) ( 61,413 ) ( 14,510 ) Net cash (used in) generated from financing activities ( 9,000 ) 18,400 65,400 For the years ended December 31, 2020, 2021 and 2022, for all of the VIEs and VIEs' subsidiaries, excluding inter-company transactions: (1) the cash generated from operating activities were RMB 685,530 , RMB 581,190 and RMB 50,755 , respectively; (2) the cash used in investing activities were RMB 85,788 , RMB 59,413 and RMB 9,510 , respectively; and (3) the cash used in financing activities were RMB 9,000 , nil and nil , respectively. There are no consolidated VIEs' assets that are collateral for the VIEs' obligations and which can only be used to settle the VIEs' obligations as of December 31, 2022. No creditors (or beneficial interest holders) of the VIEs have recourse to the general credit of the Company or any of its consolidated subsidiaries. No terms in any arrangements, considering both explicit arrangements and implicit variable interests, require the Company or its subsidiaries to provide financial support to the VIEs. However, if the VIEs ever needs financial support, the Company or its subsidiaries may, at its option and subject to statutory limits and restrictions, provide financial support to the VIEs through loans to the shareholders of the VIEs or entrustment loans to the VIEs. 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES – continued Foreign currency translation and transactions The Group's reporting currency is Renminbi ("RMB"). The functional currency of the subsidiaries incorporated outside the mainland China is United States dollar ("US dollar" or "US$"). The functional currency of all the other subsidiaries, the VIEs and VIEs' subsidiaries is RMB. Monetary assets and liabilities denominated in currencies other than the applicable functional currencies are translated into the functional currencies at the prevailing rates of exchange at the balance sheet date. Nonmonetary assets and liabilities are remeasured into the applicable functional currencies at historical exchange rates. Revenues and expenses are translated using the average rate of exchange in effect during the reporting period. Translation adjustments are reported and shown as a separate component of other comprehensive (loss) income in the consolidated statements of changes in shareholders' equity and the consolidated statements of comprehensive loss. Transactions in currencies other than the functional currencies during the year are converted into the applicable functional currencies at the applicable rates of exchange prevailing at the dates of the transactions. Transaction gains and losses are recorded in the consolidated statements of operations. Convenience translation The Group's business is primarily conducted in China and all of the revenues are denominated in RMB. However, periodic reports made to shareholders will include current period amounts translated into US dollars using the exchange rate as of balance sheet date, for the convenience of the readers. Translations of balances in the consolidated balance sheets and the related consolidated statements of operations, comprehensive loss, change in shareholders' equity and cash flows from Renminbi ("RMB") into US dollars as of and for the year ended December 31, 2022 are solely for the convenience of the readers and were calculated at the rate of US$1.00=RMB 6.8972 representing the noon buying rate set forth in the H.10 statistical release of the U.S. Federal Reserve Board on December 30, 2022. No representation is made that the RMB amounts could have been, or could be, converted, realized or settled into US$ at that rate on December 30, 2022, or at any other rate. Cash and cash equivalents Cash and cash equivalents comprise cash at banks and on hand, which have original maturities of three months or less when purchased and are subject to insignificant risk of changes in value. Restricted cash Restricted cash represents the cash and cash equivalents deposited in bank accounts that are legally restricted as to withdrawal or for use. 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES – continued Available-for-sale investments Available-for-sale investments are wealth management products issued by commercial banks with variable interest rates and unsecured principal and no restriction on withdrawal. The Group classified these investments as available-for-sale and record them at fair value in accordance with ASC 825 Financial Instruments with unrealized gains and losses recorded in accumulated other comprehensive income. Due to the relatively short maturities, the unrealized losses of these investments were insignificant for the year ended December 31, 2022. Accounts receivable Accounts receivable represents those receivables derived in the ordinary course of business, net of allowance for doubtful accounts. The Group evaluates its accounts receivable for expected credit losses on a regular basis. The Group maintains an estimated allowance for credit losses to reduce its accounts receivable to the amount that it believes will be collected. The Group uses the creditworthiness of customers, aging of the receivables, transaction history with customers and their current condition, changes in customer payment terms, specific facts and circumstances, and the overall economic climate in the industries the Group serves to monitor the Group's receivables within the scope of expected credit losses model and use these as a basis to develop the Group's expected loss estimates. |