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v3.22.1

Related Party Transactions and Balances - Additional Information (Detail) ¥ in Millions, $ in Millions |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 30, 2020 CNY (¥) | Apr. 11, 2019 CNY (¥) | Apr. 11, 2019 USD ($) | Apr. 30, 2020 shares | Dec. 31, 2021 | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 CNY (¥)
Prepayment For The Future Exercise Price Of EatTogether Warrant [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Amounts due to related parties |  |  |  |  |  | ¥ 190.5 |
Supplementary Agreement [Member] | Eat Together Warrant [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Payment for exercise of warrant | ¥ 28.7 |  |  |  |  |  |
Mr. Liang Changlin [Member] | Onshore Loans [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  | ¥ 190.5
Maturity date |  |  |  |  | Dec. 31, 2024 |  |
Founder [Member] | Series B Four One Redeemable Convertible Preferred Shares [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Temporary equity, Shares issued | shares |  |  |  | 6,664,000 |  |  |
Founder [Member] | Eat Together Warrant [Member] | Series B Four One Redeemable Convertible Preferred Shares [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Temporary equity, Shares issued | shares |  |  |  | 6,664,000 |  |  |
Founder [Member] | Supplementary Agreement [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Repayment of related party debt | ¥ 190.5 |  |  |  |  |  |
Eat Together Holding Limited [Member] |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Value of warrants issued to settle onshore loans |  | ¥ 190.5 | $ 28.7 |  |  |  |

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