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RELATED PARTY TRANSACTIONS, Related Parties (Details)
12 Months Ended
Dec. 31, 2020
Tencent Limited and its affiliates ("Tencent") [Member]  
Related Parties [Abstract]  
Relationship with the Company A shareholder of the Company [1]
[1] These are the related parties that have engaged in significant transactions with the Company for the years ended December 31, 2018, 2019 and 2020.