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TRADE RECEIVABLES (Details 2) ¥ in Thousands, $ in Thousands | 12 Months Ended
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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

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