Concentration and Risk - Schedule of Cash and Cash Equivalents and Restricted Cash (Details) - CNY (¥) ¥ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items]
Cash and cash equivalents and restricted cash	¥ 44,365	¥ 89,484
PRC [Member]
Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items]
Cash and cash equivalents and restricted cash	37,108
PRC [Member] \| RMB [Member]
Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items]
Cash and cash equivalents and restricted cash	29,828	22,355
PRC [Member] \| U.S. dollar [Member]
Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items]
Cash and cash equivalents and restricted cash	7,280	20,682
Hong Kong [Member] \| HKD [Member]
Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items]
Cash and cash equivalents and restricted cash	525	319
Hong Kong [Member] \| U.S. dollar [Member]
Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items]
Cash and cash equivalents and restricted cash	¥ 6,732	¥ 46,128

Amount of cash and cash equivalent restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-8

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(1)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-4

Name:	us-gaap_RestrictedCashAndCashEquivalents
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant