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Share-Based Compensation - Additional Information (Details) ¥ / shares in Units, $ / shares in Units, ¥ in Thousands, $ in Thousands |  |  |  |  |  |  | 12 Months Ended |  |
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Aug. 12, 2024 CNY (¥) ¥ / shares shares | Aug. 12, 2024 USD ($) $ / shares shares | Jun. 01, 2023 CNY (¥) ¥ / shares shares | Feb. 05, 2021 ¥ / shares shares | Feb. 17, 2020 ¥ / shares shares | Jun. 30, 2019 ¥ / shares shares | Jan. 22, 2019 CNY (¥) shares | Jan. 22, 2019 $ / shares | Feb. 28, 2025 CNY (¥) ¥ / shares | Feb. 28, 2025 USD ($) | Feb. 29, 2024 CNY (¥) ¥ / shares | Feb. 28, 2023 CNY (¥) | Feb. 28, 2019 CNY (¥) | Feb. 28, 2025 USD ($) | Jun. 30, 2015 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares option granted | 1,901,790 | 1,901,790 | 1,155,000 |  |  |  | 460,000 |  |  |  |  |  |  |  |
Shares option granted per share | (per share) | ¥ 0.58 | $ 0.08 | ¥ 2 |  |  |  |  | $ 4.6 | ¥ 7.28 |  | ¥ 14.40 |  |  |  |
Incremental compensation cost | ¥ 3,170 | $ 435 | ¥ 453 |  |  |  | ¥ 3,967 |  |  |  |  |  |  |  |
Compensation expense | ¥ |  |  |  |  |  |  |  |  |  |  | ¥ 400 |  | ¥ 127 |  |
Incremental compensation cost amortized over remaining vesting period | ¥ |  |  | ¥ 53 |  |  |  | ¥ 3,840 |  |  |  |  |  |  |  |
Share-based compensation expenses |  |  |  |  |  |  |  |  | ¥ 5,026 | $ 690 | ¥ 3,122 | ¥ 3,168 |  |  |
Unrecognized compensation cost related to non-vested share options |  |  |  |  |  |  |  |  | ¥ 3,050 |  |  |  |  | $ 419 |
Unrecognized compensation cost expected to recognized over a weighted-average period |  |  |  |  |  |  |  |  | 3 years 4 months 9 days | 3 years 4 months 9 days |  |  |  |  |
Directors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |
Shares option granted |  |  |  | 860,000 |  |  |  |  |  |  |  |  |  |  |
Weighted average grant date fair value of options granted per share | ¥ / shares |  |  |  | ¥ 13.24 |  |  |  |  |  |  |  |  |  |  |
Options expiration period |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |
Officers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |
Shares option granted |  |  |  | 860,000 |  |  |  |  |  |  |  |  |  |  |
Weighted average grant date fair value of options granted per share | ¥ / shares |  |  |  | ¥ 13.24 |  |  |  |  |  |  |  |  |  |  |
Options expiration period |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |
Employees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  | 4 years | 4 years | 4 years |  |  |  |  |  |  |  |  |  |
Shares option granted |  |  | 100,000 | 860,000 | 80,000 | 360,000 |  |  |  |  |  |  |  |  |
Weighted average grant date fair value of options granted per share | ¥ / shares |  |  | ¥ 17.75 | ¥ 13.24 | ¥ 10.03 | ¥ 10.46 |  |  |  |  |  |  |  |  |
Options expiration period |  |  | 10 years | 10 years | 10 years |  |  |  |  |  |  |  |  |  |
Independent Directors, Executive Officers and Employees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares option granted | 650,000 | 650,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average grant date fair value of options granted per share | (per share) | ¥ 8.99 | $ 1.24 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Independent Directors, Executive Officers and Employees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period | 4 years | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Independent Directors, Executive Officers and Employees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period | 2 years | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |
2015 Option Plan and 2017 Option Plan | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of ordinary shares authorized to issue |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,201,330

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