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Share-based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2022
Share-based Payment Arrangement [Abstract] |
Summary of RSUs activity under the Share Incentive Plan | The following table summarizes the Company’s RSUs activity under the Plans:
|  | Number of RSUs |  |  | Weighted average grant date fair value |  |  | Weighted average remaining contractual life |
|  |  |  |  | (US$) |  |  | (Years) |
Unvested, December 31, 2019 |  |  | 735,476 |  |  |  | 4.7523 |  |  |  | 3.02 |
Granted |  |  | 2,363,000 |  |  |  | 4.2912 |  |  |  |  |
Vested |  |  | (1,819,726 | ) |  |  | 4.1359 |  |  |  |  |
Forfeited |  |  | — |  |  |  | — |  |  |  |  |
Unvested, December 31, 2020 |  |  | 1,278,750 |  |  |  | 4.7774 |  |  |  | 2.68 |
Granted |  |  | 4,790,000 |  |  |  | 10.6200 |  |  |  |  |
Vested |  |  | (1,949,250 | ) |  |  | 9.2469 |  |  |  |  |
Forfeited |  |  | — |  |  |  | — |  |  |  |  |
Unvested, December 31, 2021 |  |  | 4,119,500 |  |  |  | 9.4561 |  |  |  | 2.67 |
Granted |  |  | 876,380 |  |  |  | 1.8800 |  |  |  |  |
Vested |  |  | (2,034,880 | ) |  |  | 7.2254 |  |  |  |  |
Forfeited |  |  | (283,000 | ) |  |  | 7.5431 |  |  |  |  |
Unvested, December 31, 2022 |  |  | 2,678,000 |  |  |  | 8.8740 |  |  |  | 1.90 |
Expected to vest as of December 31, 2022 |  |  | 2,678,000 |  |  |  |  |  |  |  |  |
Summary Of Share option Activity | The following table summarizes the Company’s share options activity under the 2015 Plan:
|  | Number of share options |  |  | Weighted average grant date fair value |  |  | Weighted average exercise price |
|  |  |  |  | (US$) |  |  | (US$) |
Outstanding as of January 1 and December 31, 2022 |  |  | 53,737 |  |  |  | 2.2624 |  |  |  | 5.8853 |
Vested and expected to vest as of December 31, 2022 |  |  | 53,737 |  |  |  | 2.2624 |  |  |  | 5.8853 |
Exercisable as of December 31, 2022 |  |  | 53,737 |  |  |  | 2.2624 |  |  |  | 5.8853 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] | The Group calculated the estimated fair value of the share options under the 2015 Plan on the grant date using the Black-Scholes valuation model. Assumptions used to determine the fair value of the share options granted under the 2015 Plan is summarized in the following table:
|  | For the year ended December 31, 2020 |
Term in years |  |  | 5 |
Volatility |  |  | 53.73 | %
Discount rate |  |  | 0.85 | %
Fair value per ordinary share |  | US$ | 5.24 |
Summary of Share-based Compensation Expenses Relating to RSUs Recognized | Total share-based compensation expenses relating to RSUs and options granted to employees recognized for the years ended December 31, 2020, 2021 and 2022 were as follows:
|  | For the year ended December 31, |
|  | 2020 |  |  | 2021 |  |  | 2022 |
|  | RMB |  |  | RMB |  |  | RMB |  |  | US$ |
Cost of revenues |  |  | 2,443 |  |  |  | — |  |  |  | — |  |  |  | — |
Sales and marketing expenses |  |  | 10,883 |  |  |  | 18,327 |  |  |  | 22,125 |  |  |  | 3,208 |
General and administrative expenses |  |  | 14,453 |  |  |  | 71,147 |  |  |  | 38,452 |  |  |  | 5,575 |
Research and development expenses |  |  | 27,078 |  |  |  | 31,657 |  |  |  | 36,321 |  |  |  | 5,266 |
|  |  | 54,857 |  |  |  | 121,131 |  |  |  | 96,898 |  |  |  | 14,049 |

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