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Summary of Significant Accounting Policies (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 CNY (¥) $ / ¥	Dec. 31, 2022 USD ($) $ / ¥	Dec. 31, 2021 CNY (¥)	Dec. 31, 2020 CNY (¥)
Foreign Currency
Foreign currency exchange loss (gain), net	¥ (375)	$ (54)	¥ 394	¥ 4,084
Convenience Translation
Translation to USD	6.8972	6.8972

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- Definition

Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section S99
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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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