Advance to Suppliers (Details) - Schedule of Advance to Suppliers ¥ in Thousands, $ in Thousands	Jun. 30, 2024 CNY (¥)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 CNY (¥)
Schedule of Advance to Suppliers [Abstract]
Advance to suppliers	¥ 19,327	$ 2,659	¥ 19,288
Less: allowance for expected credit losses	(8,076)	(1,111)	(8,472)
Advance to suppliers, net	¥ 11,251	$ 1,548	¥ 10,816

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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 340
-SubTopic 10
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
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Name:	us-gaap_Supplies
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant