Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

NET REVENUES (Details)

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NET REVENUES (Details)
 9 Months Ended 12 Months Ended
Dec. 31, 2017
CNY (¥)
Dec. 31, 2018
USD ($)
Dec. 31, 2018
CNY (¥)
Dec. 31, 2017
CNY (¥)
Mar. 31, 2017
CNY (¥)
Dec. 31, 2018
CNY (¥)
Jan. 01, 2018
CNY (¥)
NET REVENUES              
Net revenues ¥ 5,185,822 $ 194,690 ¥ 1,338,592 ¥ 7,389,371 ¥ 8,831,390    
Retained earnings 25,884,905 $ (10,455,760)   ¥ 25,884,905   ¥ (71,888,585)  
ASU 2014-09 | Adjustment              
NET REVENUES              
Retained earnings             ¥ 0
ASU 2014-09 | Not adopted ASC 606 | Proforma adjustment              
NET REVENUES              
Net revenues     5,943,984        
K12 education assessment services revenue              
NET REVENUES              
Net revenues 349,057   944,340   235,849    
Other revenue              
NET REVENUES              
Net revenues 4,836,765   394,252   8,595,541    
rental income              
NET REVENUES              
Net revenues ¥ 4,041,142       ¥ 7,181,226    
rental income | ASU 2014-09 | Adjustment | Other operating income, net              
NET REVENUES              
Net revenues     ¥ 5,943,984