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Taxation - Schedule of Components of Income Tax Expense (Details) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]          
Current income tax expense     $ 7,243 $ 151,153 $ 672,205
Deferred income tax expense     (1,853,280) (38,890)
Income tax benefit, total $ 1,834,911 $ 7,243 $ (1,702,127) $ 633,315