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

RELATED PARTY TRANSACTIONS - Sublease (Details)

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RELATED PARTY TRANSACTIONS - Sublease (Details) - CNY (¥)
9 Months Ended 12 Months Ended
Dec. 31, 2017
Mar. 31, 2017
Master Mind Education Company ("Master Mind") | Sublease of Jianwai SOHO office    
RELATED PARTY TRANSACTIONS    
Revenue from related parties ¥ 207,346 ¥ 650,478