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Summary of Significant Accounting Policies - Schedule of Allowance for Credit Losses (Details) - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Accounting Policies [Abstract]    
Allowance for credit losses, beginning $ 7,212,644 $ 3,683,842
Increase in allowance for credit losses 13,528,638 3,576,669
Foreign exchange difference 476,124 (47,867)
Allowance for credit losses, ending $ 21,217,406 $ 7,212,644