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LOSS PER SHARE (Details) - CNY (¥)
¥ / shares in Units, ¥ in Thousands
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
LOSS PER SHARE    
Loss attributable to holders of ordinary shares ¥ (29,335) ¥ (70,769)
Weighted average number of ordinary shares outstanding used in computing basic and diluted earnings per share 6,013,143 4,357,598
Loss per share - basic (RMB) ¥ (4.88) ¥ (16.24)
Loss per share - diluted (RMB) ¥ (4.88) ¥ (16.24)