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Share-based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2021
Share based Compensation |
Summary of the Group's share-based compensation cost | The table below presents a summary of the Group’s share-based compensation cost (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the year ended December 31,
​ |  | 2019 |  | 2020 |  | 2021
​ | ​ | RMB | ​ | RMB | ​ | RMB
Cost of revenues |  | 758,810 |  | 794,855 |  | 833,389
Selling and marketing expenses |  | 84,920 |  | 102,300 |  | 118,611
General and administrative expenses |  | 797,120 |  | 929,013 |  | 1,105,547
Research and development expenses |  | 763,239 |  | 837,321 |  | 983,945
​ |  | 2,404,089 |  | 2,663,489 |  | 3,041,492
Restricted share units |
Share based Compensation |
Summary of the Company's RSUs award activities | The following table presents a summary of the Company’s RSUs award activities for the years ended December 31, 2019, 2020 and 2021: ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted average | ​
​ | ​ | ​ | ​ | grant date fair | ​
​ | ​ | Number of RSUs | ​ | value | ​
​ |  | (in thousands) |  | US$ | ​
Outstanding at January 1, 2019 |  | 12,125 |  | 52.02 |
Granted |  | 8,815 |  | 46.30 |
Vested |  | (5,910) |  | 51.22 |
Forfeited |  | (955) |  | 48.82 |
Outstanding at December 31, 2019 |  | 14,075 |  | 49.00 |
​ | ​ | ​ | ​ | ​ | ​
Outstanding at January 1, 2020 |  | 14,075 |  | 49.00 |
Granted |  | 6,269 |  | 68.35 |
Vested |  | (5,832) |  | 48.02 |
Forfeited |  | (416) |  | 54.47 |
Outstanding at December 31, 2020 |  | 14,096 |  | 57.85 |
​ | ​ | ​ | ​ | ​ | ​
Outstanding at January 1, 2021 |  | 14,096 |  | 57.85 |
Granted |  | 4,579 |  | 110.19 |
Vested |  | (5,067) |  | 58.02 |
Forfeited |  | (612) |  | 75.29 |
Outstanding at December 31, 2021 |  | 12,996 |  | 75.40 |
​

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