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PROPERTY AND EQUIPMENT, NET - Additional Information (Detail) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Property Plant And Equipment [Abstract]      
Depreciation expenses ¥ 20,483 ¥ 17,710 ¥ 11,300