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Intangible Assets, Net - Summary of Amortization Expenses of Intangible Assets (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2019
CNY (¥)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
CNY (¥)
Intangible Assets Net Excluding Goodwill [Abstract]      
2020 ¥ 479    
2021 255    
2022 156    
2023 156    
2024 130    
Intangible assets, net ¥ 1,176 $ 169 ¥ 1,369