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LONG-TERM PREPAYMENTS AND OTHER NON-CURRENT ASSETS - Additional information (Details) - USD ($)
$ in Thousands
12 Months Ended
Feb. 28, 2022
Feb. 28, 2021
Feb. 29, 2020
LONG-TERM PREPAYMENTS AND OTHER NON-CURRENT ASSETS      
Impairment loss $ 21,393 $ 30,724 $ 0