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GOODWILL (Details) - CNY (¥)
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2015
GOODWILL      
Carrying amount ¥ 3,735,000 ¥ 3,735,000  
Accumulated impairment losses (3,735,000) (3,735,000)  
Goodwill ¥ 0 ¥ 0 ¥ 0