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Prepayments and other current assets

6 Months Ended

Jun. 30, 2021

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

4 Prepayments and other current assets

Prepayments and other current assets consist of the following:


			As of
			December 31, 2020		June 30, 2021
			RMB		RMB		US$
Prepaid service fee				12,028		8,389		1,299
Investment in a convertible loan				—		4,223		654
VAT and other surcharges				10,467		10,336		1,601
Office rental deposit				636		342		53
Receivables from sales of shares on behalf of employees				11,060		364		56
Refund from prepaid media cost				6,838		1,095		170
Receivables on behalf of third party advertising companies	(i	)		—		16,966		2,628
Loans granted to equity investees	(ii	)		500		3,500		542
Others				7,484		6,252		968

Total prepayments and other current assets				49,013		51,467		7,971

(i)	Starting from January 1, 2021, the Company has fully exited the Targeted Marketing business and this balance represents the receivables the Company acts as agent and collects on behalf of third party advertising companies for targeted marketing related services.

(ii)

As of December 31, 2020, under prepayments and other current assets includes the impairment charges of RMB4,500 that the Company recognized on loans granted to equity investees. No impairment charges were recognized on loans granted to equity investees for the six months ended June 30, 2021. The Company evaluates the impairment of the equity investments without readily determinable fair value along with loans the Company granted to those investees.