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Share-Based Compensation - Additional information (Details) ¥ / shares in Units, $ / shares in Units, ¥ in Thousands, $ in Thousands | 1 Months Ended | 12 Months Ended |  |
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May 31, 2021 CNY (¥) | Oct. 31, 2020 CNY (¥) shares | Dec. 31, 2023 CNY (¥) ¥ / shares shares | Dec. 31, 2023 USD ($) $ / shares shares | Dec. 31, 2022 CNY (¥) ¥ / shares shares | Dec. 31, 2022 $ / shares | Dec. 31, 2021 CNY (¥) shares | Dec. 31, 2019 item shares | Dec. 31, 2018 $ / shares | Dec. 31, 2020 shares | Oct. 31, 2020 $ / shares
Weighted Average Grant Date Fair Value per Share | ¥ / shares |  |  | ¥ 0.57 |  | ¥ 0.70 |  |  |  |  |  |
Number of option in grants |  |  | 281,250 | 281,250 | 800,000 |  |  |  |  |  |
Weighted Average exercise price of grants | ¥ / shares |  |  | ¥ 0.57 |  | ¥ 0.54 |  |  |  |  |  |
Share-based compensation expense |  |  | ¥ 133,869 | $ 18,855 | ¥ 112,026 |  | ¥ 226,161 |  |  |  |
Common Stock, Shares, Issued |  |  | 3,701,622,010 |  |  |  |  |  |  | 1,203,526,000 |
Reclassified of awards from liability to equity | ¥ |  |  | ¥ 133,869 |  | 112,026 |  | ¥ 283,291 |  |  |  |
Reclassified of awards from liability to equity | ¥ |  |  |  |  | 67,505 |  |  |  |  |  |
Restricted Stock |  |  |  |  |  |  |  |  |  |  |
Weighted Average Grant Date Fair Value per Share | $ / shares |  |  |  |  |  |  |  |  | $ 0.20 |  |
No repurchases Occurred |  |  |  |  |  |  | 0 |  |  |  |
Share-based compensation expense | ¥ |  |  |  |  |  |  | ¥ 36,786 |  |  |  |
Total fair value of vested | ¥ |  |  | ¥ 31,872 |  | 14,524 |  |  |  |  |  |
Share Option |  |  |  |  |  |  |  |  |  |  |
Number of option in grants |  |  | 0 | 0 |  |  |  |  |  |  |
Total intrinsic value of options exercised | ¥ |  |  | ¥ 112,499 |  | ¥ 20,428 |  |  |  |  |  |
Unrecognized Compensation cost | ¥ |  |  | ¥ 166,855 |  |  |  |  |  |  |  |
Weighted average period |  |  | 2 years 3 months 18 days | 2 years 3 months 18 days |  |  |  |  |  |  |
Share-based compensation expense | ¥ |  |  |  |  |  |  | ¥ 42,154 |  |  |  |
key management grantee exercise multiple |  |  | 2.8 | 2.8 |  |  |  |  |  |  |
Non-key management grantee exercise multiple |  |  | 2.2 | 2.2 |  |  |  |  |  |  |
Reclassified of awards from liability to equity | ¥ | ¥ 68,567 |  |  |  |  |  |  |  |  |  |
Share Option | 2018 Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Types of Award | item |  |  |  |  |  |  |  | 3 |  |  |
Maximum shares available for issuance |  |  |  |  |  |  |  | 62,504,000 |  |  |
Number of Additional shares reserved |  |  |  |  |  |  |  | 321,655,746 |  |  |
Increase in maximum shares available for issuance |  |  |  |  |  |  |  | 384,159,746 |  |  |
Number of option in grants |  |  | 281,250 | 281,250 | 800,000 |  |  |  |  |  |
Weighted Average exercise price of grants | (per share) |  |  | ¥ 0.57 | $ 0.08 | ¥ 0.54 | $ 0.08 |  |  |  |  |
Share Option | 2018 Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Share based compensation award vesting period |  |  | 4 years | 4 years |  |  |  |  |  |  |
Share Option | 2018 Plan [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Share based compensation award vesting period |  |  | 1 year | 1 year |  |  |  |  |  |  |
Share Option | 2021 Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Common Stock, Shares, Issued |  |  |  |  |  |  | 80,508,501 |  |  |  |
Percentage of total number of shares issued and outstanding |  |  |  |  |  |  | 2.00% |  |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense | ¥ |  |  |  |  |  |  | ¥ 16,403 |  |  |  |
Restricted Stock Units (RSUs) [Member] | 2018 Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 69,910,980 | 69,910,980 | 112,336,970 |  |  |  |  |  |
Restricted Stock Units (RSUs) [Member] | 2018 Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Share based compensation award vesting period |  |  | 4 years | 4 years |  |  |  |  |  |  |
Restricted Stock Units (RSUs) [Member] | 2018 Plan [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Share based compensation award vesting period |  |  | 1 year | 1 year |  |  |  |  |  |  |
Restricted Stock Units (RSUs) [Member] | 2021 Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 0 | 0 | 0 |  |  |  |  |  |
Selected Management [Member] | Restricted Stock |  |  |  |  |  |  |  |  |  |  |
Grant of shares replacing the option plan |  | 102,762,450 |  |  |  |  |  |  |  |  |
Share Price | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 0.003
Selected Management [Member] | Share Option |  |  |  |  |  |  |  |  |  |  |
Share based compensation expense and capitalized, amount | ¥ |  | ¥ 26,330 |  |  |  |  |  |  |  |  |
Selected Management [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |
Share based compensation expense and capitalized, amount | ¥ |  | ¥ 5,702 |  |  |  |  |  |  |  |  |

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