Fair Value Measurement	12 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENT	11. FAIR VALUE MEASUREMENT The carrying amounts of cash and cash equivalents, restricted cash, term deposits, short-term investments, accounts receivables, loans receivable, prepaid expenses and other current assets, accounts payable, short-term borrowings and accrued expenses and other current liabilities approximate their fair values due to the short-term maturities. The carrying amounts of long-term borrowings approximate their fair value as their interest rates are at the same level of current market yield for comparable loans. Measured at fair value on a non-recurring basis The Group’s goodwill and intangible assets are primarily acquired through business acquisitions. Purchase price allocation are measured at fair value on a non-recurring basis as of the acquisition dates. The Group measures its goodwill and intangible assets at fair value on a non-recurring basis when it is annually evaluated or whenever events or changes in circumstances indicate that carrying amount of a reporting unit exceeds its fair value. Acquired intangible assets are measured using the income approach — discounted cash flow method when events or changes in circumstances indicate that the carrying amount of an asset may no longer be recoverable. The Group did not recognize any impairment loss related to goodwill and intangible assets acquired for the years ended December 31, 2019 and 2020. Details please refer to Note 7 and 8. The Group measures ROU assets, property and equipment and other long-lived assets on a non-recurring basis whenever events or changes in circumstances indicate that the carrying value may no longer be recoverable. The fair value is determined using models with significant unobservable inputs (Level 3 inputs), primarily the management projection of discounted future cash flow and the discount rate. The Group recorded RMB94,311, RMB21,103 and RMB4,667 impairment losses on its ROU assets, RMB16,892, RMB 9,476 and RMB3,460 impairment losses on property and equipment for the years ended December 31, 2018, 2019 and 2020, respectively. There is no transfer between different levels during the year ended December 31, 2019 and 2020.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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