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Income taxes - Income tax expense recognized in the consolidated statements of comprehensive loss (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2020 CNY (¥)
Income taxes
Current income tax expense	¥ 21,571	$ 3,128	¥ 3,447	¥ 228

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- References

No definition available.

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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