Cash and Cash Equivalents and Restricted Cash - Schedule of Cash and Cash Equivalents and Restricted Cash (Details) - CNY (¥) ¥ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items]
Cash and cash equivalents and restricted cash	¥ 17,760	¥ 32,659
PRC [Member]
Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items]
Cash and cash equivalents and restricted cash	17,760
PRC [Member] \| RMB [Member]
Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items]
Cash and cash equivalents and restricted cash	13,156	27,315
PRC [Member] \| U.S. dollar [Member]
Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items]
Cash and cash equivalents and restricted cash	728	1,587
Hong Kong [Member]
Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items]
Cash and cash equivalents and restricted cash	17,760
Hong Kong [Member] \| HKD [Member]
Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items]
Cash and cash equivalents and restricted cash	226	471
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	¥ 3,650	¥ 3,286

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.