3. SIGNIFICANT ACCOUNTING POLICIES

The accompanying condensed consolidated financial statements of the Group have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) and generally accepted accounting principles in the United States of America (“U.S. GAAP”) for interim financial reporting. The information furnished herein reflects all adjustments (consisting of normal recurring accruals and adjustments) which are, in the opinion of management, necessary to fairly state the operating results for the respective periods. Certain information and footnote disclosures normally present in the annual consolidated financial statements prepared in accordance with U.S. GAAP have been omitted pursuant to such rules and regulations. These condensed consolidated financial statements should be read in conjunction with the financial statements and footnotes thereto, included in the Company’s 2021 Annual Report filed with the SEC on May 2, 2022. The interim results of operations are not necessarily indicative of the results to be expected for the full fiscal year or any future periods.

All amounts in the accompanying condensed consolidated financial statements and notes are expressed in Renminbi (“RMB”). Amounts in United States dollars (“US$”) are presented solely for the convenience of readers and use an exchange rate of RMB 6.6981, representing the middle rate as set forth in the H.10 statistical release of the U.S. Federal Reserve Board as of June 30, 2022. No representation is made that the RMB amounts could have been, or could be, converted into US$ at such rate.

The Group’s revenue is generated from delivering educational programs and services and intellectualized operational services.

Disaggregation of revenues

The following table illustrates the disaggregation of revenue by operating segments for the six and three months ended June 30, 2022 and 2021, respectively:

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Contract Balances

The transferred control of promised services to customers result in the Group’s unconditional rights and conditional consideration receivable on passage of time. There was no contract assets as of June 30, 2022 and December 31, 2021.

Contract liabilities represent the Group has received consideration but has not satisfied the related performance obligations. The tuition and service fees received in advance are the Group’s contract liabilities and presented in deferred revenue in the consolidated balance sheets. The revenue recognized during the six months ended June 30, 2022 that was previously included in the deferred revenue balances as of December 31, 2021 was RMB 95,036.

The following table provides the deferred revenue balances by segments as of June 30, 2022 and December 31, 2021.

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Management used an expected credit loss model under ASC 326 for the impairment of trading receivables as of period ends. Management believes the aging of accounts receivable is a reasonable parameter to estimate expected credit loss, and determines expected credit losses for accounts receivables using an aging schedule as of period ends. The expected credit loss rates under each aging schedule were developed on basis of the average historical loss rates from previous years, and adjusted to reflect the effects of those differences in current conditions and forecasted changes. Management measured the expected credit losses of accounts receivable on a collective basis. When an accounts receivable does not share risk characteristics with other accounts receivables, management will evaluate such accounts receivable for expected credit loss on an individual basis. Doubtful accounts balances are written off and deducted from allowance, when receivables are deemed uncollectible, after all collection efforts have been exhausted and the potential for recovery is considered remote.