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SHARE-BASED COMPENSATION, Assumptions (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Unrecognized Compensation Cost [Abstract]      
Total unrecognized compensation cost $ 2,189,201    
Unrecognized compensation cost, recognition period 2 years 18 days    
Stock Options [Member]      
Assumptions Used in Valuing Stock Options [Abstract]      
Expected dividends yield   0.00% 0.00%
Stock Options [Member] | Modification [Member]      
Assumptions Used in Valuing Stock Options [Abstract]      
Expected dividends yield 0.00%    
The fair value of underlying ordinary shares (in dollars per share) $ 5.74    
Stock Options [Member] | Before Modification [Member]      
Assumptions Used in Valuing Stock Options [Abstract]      
Expected dividends yield 0.00%    
Stock Options [Member] | Minimum [Member]      
Assumptions Used in Valuing Stock Options [Abstract]      
Expected volatility   82.33% 82.33%
Risk-free interest rate per annum   1.84% 1.84%
The fair value of underlying ordinary shares (in dollars per share)   $ 1.21 $ 1.21
Stock Options [Member] | Minimum [Member] | Modification [Member]      
Assumptions Used in Valuing Stock Options [Abstract]      
Expected volatility 58.09%    
Risk-free interest rate per annum 0.06%    
Stock Options [Member] | Minimum [Member] | Before Modification [Member]      
Assumptions Used in Valuing Stock Options [Abstract]      
Expected volatility 82.33%    
Risk-free interest rate per annum 1.84%    
The fair value of underlying ordinary shares (in dollars per share) $ 1.21    
Stock Options [Member] | Maximum [Member]      
Assumptions Used in Valuing Stock Options [Abstract]      
Expected volatility   93.48% 93.48%
Risk-free interest rate per annum   2.40% 2.40%
The fair value of underlying ordinary shares (in dollars per share)   $ 2.92 $ 2.92
Stock Options [Member] | Maximum [Member] | Modification [Member]      
Assumptions Used in Valuing Stock Options [Abstract]      
Expected volatility 91.85%    
Risk-free interest rate per annum 1.36%    
Stock Options [Member] | Maximum [Member] | Before Modification [Member]      
Assumptions Used in Valuing Stock Options [Abstract]      
Expected volatility 93.48%    
Risk-free interest rate per annum 2.40%    
The fair value of underlying ordinary shares (in dollars per share) $ 2.92