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GAIN FROM DEREGISTRATION OF SUBSIDIARIES (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2019 CNY (¥)	Dec. 31, 2018 CNY (¥)
GAIN FROM DEREGISTRATION OF SUBSIDIARIES
Gain from deregistration of subsidiaries	$ 608	¥ 3,967	¥ 1,841	¥ 2,858

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Gain from deregistration of subsidiaries.

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