LOSS PER SHARE (Details) - ¥ / shares	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
LOSS PER SHARE
Loss attributable to holders of ordinary shares	(193,095,000)	(9,501,000)	(418,674,000)
Weighted average number of ordinary shares outstanding used in computing basic and diluted (loss)/earnings per share	2,940,265	2,025,222	1,497,679
Weighted average number of ordinary shares outstanding used in computing basic and diluted (loss)/earnings per share	2,940,265	2,025,222	1,497,679
Loss per share - basic (RMB)	¥ (65.67)	¥ (4.68)	¥ (279.54)
Loss per share - diluted (RMB)	¥ (65.67)	¥ (4.68)	¥ (279.54)

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- Definition

Earnings (Loss) per share

+ References

No definition available.

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- Definition

The number of ordinary shares outstanding basic and diluted at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

+ References

No definition available.

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- Definition

The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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- Definition

The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

+ References

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The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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