Annual report pursuant to Section 13 and 15(d)

SHARE-BASED COMPENSATION - Fair value of the share options granted (Details)

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SHARE-BASED COMPENSATION - Fair value of the share options granted (Details) - $ / shares
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Fair value of share options granted estimated using Black Scholes    
Weighted average fair value of Common Shares $ 5.84 $ 6.00
Expected volatility 95.00% 92.00%
Risk-free interest rate 2.71% 0.95%
Expected term (years) 6 years 4 years 6 months