Prepayments and other current assets - Schedule of Prepayment and Other Current Assets (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2022 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Receivables on behalf of third party advertising companies			¥ 12,599
Prepaid service fee	¥ 15,340	$ 2,224	11,410
VAT and other surcharges	2,552	370	5,618
Investment in a convertible loan	4,632	672	4,221
Loans granted to equity investees	3,000	435	3,000
Office rental deposit	199	29	919
Prepaid media cost	900	130	551
Receivables from sales of shares on behalf of employees	73	11	180
Others	3,705	536	8,172
Total prepayments and other current assets	¥ 30,401	$ 4,407	¥ 46,670

Investment In Convertible Loans.

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- Definition

Loans granted to equity investees.

+ References

No definition available.

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- Definition

Prepaid service fee.

+ References

No definition available.

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- Definition

Receivables from exercise of share options on behalf of employees.

+ References

No definition available.

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- Definition

Receivables on behalf of third party advertising companies.

+ References

No definition available.

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- Definition

Rent Deposit.

+ References

No definition available.

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- References

No definition available.

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Amount of asset related to consideration paid in advance for other costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

+ References

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- Definition

Amount of consideration paid in advance for advertising that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

+ References

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-Name Accounting Standards Codification
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- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

+ References

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Amount of asset related to consideration paid in advance for income and other taxes that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

+ References

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