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Share-Based Compensation - Summary of Aggregate Options Activity and Information Regarding Options Outstanding (Details)
¥ / shares in Units, ¥ in Thousands, shares in Thousands
12 Months Ended
Jan. 22, 2019
$ / shares
Feb. 28, 2022
¥ / shares
shares
Feb. 28, 2021
CNY (¥)
¥ / shares
shares
Share-based Payment Arrangement [Abstract]      
Number of Options, Options outstanding, Beginning of period | shares   4,090  
Number of Options, Forfeited | shares   (122)  
Number of Options, Expired | shares   (70)  
Number of Options, Options outstanding, End of period | shares   3,898 4,090
Number of Options, Options vested or expected to vest | shares   3,898  
Number of Options, Options exercisable | shares   3,114  
Weighted Average Exercise Price, Options outstanding, Beginning of period | ¥ / shares   ¥ 14.96  
Weighted Average Exercise Price, Granted | $ / shares $ 4.6    
Weighted Average Exercise Price, Forfeited | ¥ / shares   27.12  
Weighted Average Exercise Price, Expired | ¥ / shares   19.91  
Weighted Average Exercise Price, Options outstanding, End of period | ¥ / shares   14.49 ¥ 14.96
Weighted Average Exercise Price, Options vested or expected to vest | ¥ / shares   14.49  
Weighted Average Exercise Price, Options exercisable | ¥ / shares   ¥ 13.32  
Weighted Average Remaining Contract Life (Years), Options outstanding   5 years 10 months 28 days 6 years 11 months 8 days
Weighted Average Remaining Contract Life (Years), Forfeited   8 years 5 months 8 days  
Weighted Average Remaining Contract Life (Years), Expired   5 years 5 months 4 days  
Weighted Average Remaining Contract Life (Years), Options vested or expected to vest   5 years 10 months 28 days  
Weighted Average Remaining Contract Life (Years), Options exercisable   5 years 2 months 19 days  
Aggregate Intrinsic Value, Options outstanding | ¥     ¥ 29,428