Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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PROPERTY AND EQUIPMENT, NET (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 CNY (¥)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2022 USD ($)
PROPERTY AND EQUIPMENT, NET
Sub-total	¥ 5,944	¥ 5,437
Less: accumulated depreciation	(4,038)	(2,783)
Total	1,906	2,654		$ 276
Depreciation expenses	1,423	1,472	¥ 2,466
Impairment loss of property and equipment	0	0	¥ 0
Motor vehicles
PROPERTY AND EQUIPMENT, NET
Sub-total	12	11
Office and computer equipment
PROPERTY AND EQUIPMENT, NET
Sub-total	5,715	5,227
Leasehold improvements
PROPERTY AND EQUIPMENT, NET
Sub-total	¥ 217	¥ 199