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Prepayments and other current assets (Tables)

12 Months Ended

Dec. 31, 2021

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Prepayment and Other Current Assets

						As of December 31,
						2020				2021
						RMB				RMB				US$
Receivables on behalf of third party advertising companies	(i	)					—				12,599				1,977
Prepaid service fee							12,028				11,410				1,790
VAT and other surcharges							10,467				5,618				882
Investment in a convertible loan							—				4,221				662
Loans granted to equity investees	(ii	)					500				3,000				471
Office rental deposit							636				919				144
Prepaid media cost							—				551				87
Receivables from sales of shares on behalf of employees							11,060				180				28
Refund from prepaid media cost							6,838				—				—
Others							7,484				8,172				1,282
Total prepayments and other current assets							49,013				46,670				7,323

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Tabular disclosure of the carrying amounts of other current assets.

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