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Intangible Assets, Net - Additional Information (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Intangible Assets Net Excluding Goodwill [Abstract]      
Amortization expenses ¥ 973 ¥ 848 ¥ 776