Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2022

Schedule of retained earnings

	As of December 31,
	2021		2022
	RMB		RMB			US$
PRC statutory reserve funds		57,616		60,847			8,822
Unreserved retained earnings /(losses)		447,469		(70,271	)		(10,188	)
Total retained earnings (accumulated losses)		505,085		(9,424	)		(1,366	)

Schedule of components of accumulated other comprehensive income

The components of accumulated other comprehensive income were as follows:

	Foreign currency translation adjustment			Unrealized gains on available- for sale Securities			Total
	RMB			RMB			RMB
Balance at January 1, 2020		330,610			7,163			337,773
Other comprehensive loss before reclassification		(167,476	)		(7,251	)		(174,727	)
Other comprehensive income attribute to noncontrolling interests		294			—			294
Balance at December 31, 2020		163,428			(88	)		163,340
Other comprehensive loss before reclassification		(75,536	)		—			(75,536	)
Other comprehensive income attribute to noncontrolling interests		458			—			458
Balance at December 31, 2021		88,350			(88	)		88,262
Other comprehensive loss before reclassification		263,371			—			263,371
Other comprehensive income attribute to noncontrolling interests		2,315			—			2,315
Balance at December 31, 2022		354,036			(88	)		353,948
Balance at December 31, 2022, in US$		51,330			(12	)		51,318