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v3.20.1

SUBSEQUENT EVENTS (Details) $ / shares in Units, ¥ in Thousands, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2019 CNY (¥) shares
SUBSEQUENT EVENTS |  |
Purchases of treasury shares | ¥ |  | ¥ 22,991
Restricted share units |  |
SUBSEQUENT EVENTS |  |
Restricted share units granted (in shares) |  | 3,050,427
Vesting period |  | 4 years
Restricted share units vested (in shares) |  | 301,228
Subsequent Event |  |
SUBSEQUENT EVENTS |  |
Share options granted (in shares) | 740,000 |
Exercise price of share options granted (in dollars per share) | $ / shares | $ 2.52 |
Share options exercised (in shares) | 910,042 |
Purchases of treasury shares (in shares) | 511,758 |
Purchases of treasury shares | $ | $ 1.7 |
Subsequent Event | Restricted share units |  |
SUBSEQUENT EVENTS |  |
Restricted share units granted (in shares) | 511,152 |
Vesting period | 4 years |
Vesting percentage (as a percent) | 25.00% |
Restricted share units vested (in shares) | 209,974 |

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