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DIRECTORS' AND SUPERVISORS' REMUNERATION (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
DIRECTORS' AND SUPERVISORS' REMUNERATION      
Fees ¥ 683 ¥ 780 ¥ 756
Basic salaries, housing fund, other allowances and benefits in kind 4,183 4,665 1,849
Pension costs 20 513 234
Total remuneration ¥ 4,886 ¥ 5,958 ¥ 2,839