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SHARE CAPITAL- Classes of Share Capital (Details)
¥ in Thousands, $ in Thousands
 2 Months Ended 12 Months Ended
Feb. 28, 2019
USD ($)
shares
Feb. 28, 2019
CNY (¥)
shares
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2019
CNY (¥)
shares
Dec. 31, 2018
USD ($)
shares
Dec. 31, 2018
CNY (¥)
shares
Disclosure Of SHARE CAPITAL [Line Items]            
Number of shares authorised     51,000,000   51,000,000  
Issued capital $ 45,000 ¥ 306 [1] $ 45,000 ¥ 306 [1]   ¥ 206
Issuance of new shares | ¥       67   97
Warrants exercised into shares | ¥       1,716    
Equity compensation | ¥       5   3
Issued capital     58,000 ¥ 397 [2] $ 45,000 ¥ 306 [1]
Value of Shares authorised | $     $ 400   $ 400  
Balance 5,678,703 5,678,703 5,678,703 5,678,703 3,851,485 3,851,485
Issuance of new shares (in shares)     1,200,000   1,770,299  
Warrants exercised into shares (in shares) 333,420 333,420        
Equity compensation (in shares)     94,862 94,862 56,919 56,919
Ending Balance (in shares)     7,306,985 7,306,985 5,678,703 5,678,703
Share capital [member]            
Disclosure Of SHARE CAPITAL [Line Items]            
Warrants exercised into shares | ¥       ¥ 19   ¥ 0
Warrants exercised into shares (in shares)     333,420 333,420 0 0
[1] (1) Equivalent to US$45,000
[2] (2) Equivalent to US$58,000