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TRADE RECEIVABLES (Details 2) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2022 CNY (¥)	Dec. 31, 2021 CNY (¥)
Trade Receivables
Beginning of the year	$ 2,554	¥ 17,614	¥ 13,774
(Reversal)/provision for expected credit loss, net	(578)	(3,989)	3,840
End of the year	$ 1,976	¥ 13,625	¥ 17,614