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EMPLOYEE BENEFITS OBLIGATIONS (Details) - CNY (¥)
¥ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
EMPLOYEE BENEFITS OBLIGATIONS [abstract]      
Employee benefits obligations ¥ 24,487 ¥ 26,345 ¥ 28,389
Less: current portion included in accruals and other payables (Note 29) (24,487) (26,345) ¥ (28,389)
Non-current provisions for employee benefits ¥ 0 ¥ 0