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Employee Benefit Expenses (Details) ¥ in Thousands, $ in Thousands | 6 Months Ended
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Jun. 30, 2024 CNY (¥) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 CNY (¥)
Employee Benefit Expenses [Abstract] |  |  |
Employee benefit expenses | ¥ 1,231 | $ 169 | ¥ 1,892

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Value of shares issued during the period to an employee benefit plan, such as a defined contribution or defined benefit plan. + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodValueEmployeeBenefitPlan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration