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INCOME TAXES - Tax Holiday (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Feb. 28, 2022
Feb. 28, 2021
Feb. 29, 2020
INCOME TAXES      
Increase in income tax expenses $ 68,090 $ 98,368 $ 36,750
Net loss per common share-basic $ (5.61) $ (1.05) $ (0.74)
Net loss per common share-diluted $ (5.61) $ (1.05) $ (0.74)