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Accounts receivable, net - Schedule of Accounts Receivable (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2022 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)
Receivables [Abstract]
Accounts receivable	¥ 34,869	$ 5,056	¥ 81,550
Less: allowance for doubtful accounts	(5,142)	(746)	(37,690)
Total accounts receivable, net	¥ 29,727	$ 4,310	¥ 43,860

X

- Definition

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

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X

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

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- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

+ References

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