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SHARE-BASED COMPENSATION - Schedule Of Assumptions In The Binomial Option-Pricing Model Used To Determine The Fair Value Of Stock Options (Details)
12 Months Ended
Dec. 31, 2021
$ / shares
SHARE-BASED COMPENSATION  
Expected term (in years) 10 years
Expected dividend yield 0.00%
Maximum  
SHARE-BASED COMPENSATION  
Fair value of ordinary shares on the grant date of share options (US$) $ 18.09
Risk-free interest rate 2.00%
Expected volatility 59.80%
Expected early exercise multiple 2.8x
Minimum  
SHARE-BASED COMPENSATION  
Fair value of ordinary shares on the grant date of share options (US$) $ 6.78
Risk-free interest rate 1.60%
Expected volatility 58.80%
Expected early exercise multiple 2.2x