Leases (Details) - Dec. 31, 2022 - Operating Lease [Member]	CNY (¥)	USD ($)
Leases (Details) [Line Items]
Operating lease liabilities,current	¥ 1,696	$ 246
Operating lease liabilities,non current	¥ 4,789	$ 694

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

Name:	us-gaap_OperatingLeaseLiabilityNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant