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SHARE CAPITAL- Summary of warrant activity (Details)
 12 Months Ended
Dec. 18, 2019
$ / shares
Dec. 04, 2018
USD ($)
Dec. 31, 2019
CNY (¥)
$ / shares
Dec. 31, 2018
CNY (¥)
$ / shares
Dec. 31, 2017
CNY (¥)
$ / shares
SHARE CAPITAL          
Outstanding at the beginning | ¥     742,857 192,857  
Exercisable at the beginning | ¥     742,857 192,857  
Granted 0.68 1.18 1,260,000 550,000  
Exercised | ¥     333,420 0  
Forfeited | ¥     0 0  
Expired | ¥     0 0  
Outstanding at the end | ¥     1,669,437 742,857 192,857
Exercisable at the end | ¥     1,669,437 742,857 192,857
Weighted average exercise price of other equity instruments outstanding at beginning of period     $ 2.58 $ 6.24  
Weighted average exercise price of other equity instruments exercisable at beginning of period     2.58 6.24  
Weighted average exercise price, Granted     0.83 1.30  
Weighted average exercise price, Exercised     1.30 0.00  
Weighted average exercise price, Forfeited     0.00 0.00  
Weighted average exercise price, Expired     0.00 0.00  
Weighted average exercise price of other equity instruments outstanding at end of period     1.52 2.58 $ 6.24
Weighted average exercise price of other equity instruments exercisable at end of period     $ 1.52 $ 2.58 $ 6.24
Weighted average remaining contractual term, exercisable at the end (in years)     4 years 4 months 17 days 4 years 2 months 9 days 3 years 1 month 2 days
Weighted average remaining contractual term, Granted     5 years 5 years  
Weighted average remaining contractual term, outstanding at the end (in years)     4 years 4 months 17 days 4 years 2 months 9 days 3 years 1 month 2 days