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CASH AND BANK BALANCES - Additional Information (Details) - CNY (¥)
Dec. 31, 2020
Dec. 31, 2019
CASH AND BANK BALANCES    
Restricted Cash and Cash Equivalents ¥ 0 ¥ 2,785,000
Cash collateral for bank borrowings 0 0
Cash collateral for derivative financial liability ¥ 0 ¥ 0