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EMPLOYEE BENEFITS (Details) ¥ in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2024 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 CNY (¥)
Notes and other explanatory information [abstract]
Wages, salaries and allowances		$ 154	¥ 1,126	¥ 1,073	¥ 1,042
Housing funds	[1]	7	49	12	16
Contribution to pension plans	[1]	6	42	70	67
Welfare and other expenses		5	34	37	46
Total employee benefits		$ 172	¥ 1,251	¥ 1,192	¥ 1,171
[1] According to the Mainland China state regulations, the employees of the Group's subsidiaries which operate in Mainland China are required to participate in a central pension scheme operated by the local municipal government and government-sponsored housing funds. These subsidiaries are required to contribute a certain percentage of their payroll costs for those qualified urban employees to the central pension scheme as well as to housing funds.

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- Definition

The amount of employee expenses that the entity does not separately disclose in the same statement or note.

+ References

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- Definition

The amount of post-employment benefit expense relating to defined contribution plans. Defined contribution plans are post-employment benefit plans under which an entity pays fixed contributions into a separate entity (a fund) and will have no legal or constructive obligation to pay further contributions if the fund does not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods.

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- Definition

A class of employee benefits expense that represents wages and salaries. [Refer: Employee benefits expense]

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