Quarterly report pursuant to Section 13 or 15(d)

Long-Term Investment (Details)

v3.21.1
Long-Term Investment (Details) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Prepayment for Long-term Investment [Abstract]    
Investment cost $ 4,956,987 $ 5,027,600
Less: Allowance for value decline (1,322,858) (722,044)
Net $ 3,634,129 $ 4,305,556