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ACQUISITIONS AND DISPOSALS (Schedule of Pro forma Results) (Details) - Tianjin Jiatai, SH Rongchi, Oriental, Heze MZJH, Wuxi MZJH And SH MZJH [Member] ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020 CNY (¥)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 CNY (¥)
Business Acquisition [Line Items]
Net revenues	¥ 193,251	$ 27,759	¥ 186,086
Net loss	¥ (589,774)	$ (84,716)	¥ (376,130)

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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