XML 79 R63.htm IDEA: XBRL DOCUMENT v3.21.1
LONG TERM INVESTMENTS - Equity securities without readily determinable fair value - (Details)
1 Months Ended 12 Months Ended
Dec. 31, 2019
USD ($)
Oct. 31, 2017
USD ($)
Oct. 31, 2017
CNY (¥)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Equity Securities without Readily Determinable Fair Value [Line Items]            
Equity securities without readily determinable fair value $ 2,036,413     $ 2,132,567 $ 2,036,413  
Payment for longterm investments         600,000  
Fair value change       0 755,524 $ 0
Tibet Gelonghui Information Technology Co., LTD ("Gelonghui")            
Equity Securities without Readily Determinable Fair Value [Line Items]            
Equity securities without readily determinable fair value 1,436,413     1,532,567 1,436,413  
Percentage of equity interest acquired   1.00% 1.00%      
Payment for longterm investments   $ 1,536,972 ¥ 10,000,000      
Fair value change       0 0  
UNext Group Limited ("UNext")            
Equity Securities without Readily Determinable Fair Value [Line Items]            
Equity securities without readily determinable fair value $ 600,000     600,000 600,000  
Percentage of equity interest acquired 0.60%          
Payment for longterm investments $ 600,000          
Fair value change       $ 0 $ 0