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Operating Lease - Schedule of Right-of-Use Assets and Lease Liabilities (Details) ¥ in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2025 CNY (¥)	Dec. 31, 2024 CNY (¥)	Jun. 30, 2025 USD ($)	Jun. 30, 2024
Schedule of Right-of-Use Assets and Lease Liabilities [Abstract]
Cost	¥ 2,813	¥ 2,813
Accumulated amortization	(478)	(217)
Right of use assets, net	2,335	2,596	$ 326
Lease liabilities	482	457	67
Lease liabilities	2,000	2,226	$ 279
Total lease liabilities	¥ 2,482	¥ 2,683
Weighted discount rate for the operating lease	3.85%		3.85%
Weighted average remaining lease term	4 years		4 years

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Amount of loss from impairment of right-of-use asset from operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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

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

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Amount of lessee's right to use underlying asset under operating lease.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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