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REVENUE AND OTHER INCOME (Details) - CNY (¥)
¥ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Revenue    
Sale of goods ¥ 42,186 ¥ 39,787
Sale of software use rights 7,921 0
Other income    
Interest income 7 37
Other income 5 0
Consulting and management income 0 2,438
Exchange gain 0 149
Rental income ¥ 7,142 ¥ 7,143