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Restricted Net Assets (Details)
¥ in Billions
12 Months Ended
Dec. 31, 2020
CNY (¥)
Restricted Net Assets  
Restricted net assets ¥ 15.9
Restricted net assets as a percentage of total consolidated net assets 19.00%
PRC | General reserve fund  
Restricted Net Assets  
Required minimum percentage of annual appropriations 10.00%
PRC | Statutory surplus reserve  
Restricted Net Assets  
Required minimum percentage of annual appropriations 10.00%