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v3.23.1

Ordinary Shares (Details) $ / shares in Units, ¥ in Thousands, $ in Thousands |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 05, 2022 HKD ($) shares | Feb. 25, 2021 $ / shares shares | Dec. 01, 2020 USD ($) | Dec. 31, 2022 CNY (¥) shares | Dec. 31, 2022 HKD ($) shares | Dec. 31, 2021 CNY (¥) shares | Dec. 31, 2020 CNY (¥) shares | Dec. 31, 2020 USD ($) shares
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Issuance of ordinary shares in connection with initial public offering, net of issuance cost | ¥ |  |  |  | ¥ 247,015 |  |  |  |
Ordinary shares, treasury stock |  |  |  | 0 | 0 | 919,515 |  |
Treasury stock, value |  |  |  |  |  | ¥ 541,379 |  | $ 44,584
Amount of authorized share repurchase program | $ |  |  | $ 100,000 |  |  |  |  |
Stock repurchase program period |  |  | 2 years |  |  |  |  |
IPO |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Sale of stock underwriting fees | ¥ |  |  |  | ¥ 30,000 |  |  |  |
Ordinary Shares | IPO |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Issuance of ordinary shares in connection with initial public offering, net of issuance cost (in shares) | 1,152,160 |  |  |  |  |  |  |
Issuance of public offering price | $ | $ 292.00 |  |  |  |  |  |  |
Issuance of ordinary shares in connection with initial public offering, net of issuance cost |  |  |  | ¥ 277,000 | $ 315,600,000 |  |  |
American Depositary Shares |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Ordinary shares, treasury stock |  | 2,233,770 |  |  |  |  | 1,088,404 | 1,088,404
Treasury stock, value | ¥ |  |  |  |  |  |  | ¥ 290,913 |
Average price | $ / shares |  | $ 44.77 |  |  |  |  |  |
Ordinary Shares |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |
Ordinary shares, treasury stock |  | 1,116,885 |  |  |  |  | 544,202 | 544,202

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