Accounts Receivable, Net

12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

ACCOUNTS RECEIVABLE, NET

5. ACCOUNTS RECEIVABLE, NET

	As of December 31,
	2020			2021			2021
	RMB			RMB			US$
Accounts receivable		3,704,732			2,988,100			468,898
Allowance for credit losses		(360,299	)		(240,326	)		(37,712	)
Accounts receivable, net		3,344,433			2,747,774			431,186

The following table presents movement of the allowance for credit losses: 

	As of December 31,
	2019			2020			2021			2021
	RMB			RMB			RMB			US$
Balance at the beginning of the year		94,856			144,574			360,299			56,539
Cumulative effect of adopting ASU 2016-13		—			72,366			—			—
Provisions/(Reversal)		72,259			202,108			(62,267	)		(9,772	)
Write-offs		(22,541	)		(58,749	)		(57,706	)		(9,055	)
Balance at the end of the year		144,574			360,299			240,326			37,712