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Consolidated Balance Sheets (Parenthetical) ¥ in Thousands, $ in Thousands | Dec. 31, 2021 CNY (¥) shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 CNY (¥) shares | Dec. 31, 2020 $ / shares
--- | --- | --- | --- | ---
Current liabilities | ¥ 2,784,202 | $ 436,901 | ¥ 1,720,023 |
Non current liabilities | ¥ 183,365 | $ 28,774 | ¥ 76,373 |
Common stock par or stated value per share | $ / shares |  | $ 0.0001 |  | $ 0.0001
Common stock shares authorized | 1,500,000,000 | 1,500,000,000 | 1,500,000,000 |
Treasury stock common shares | 21,097,870 | 21,097,870 | 3,657,853 |
Common Class A [Member] |  |  |  |
Common stock shares issued | 748,953,103 | 748,953,103 | 11,533,640 |
Common stock shares outstanding | 727,855,233 | 727,855,233 | 7,875,787 |
Common Class B [Member] |  |  |  |
Common stock shares issued | 140,830,401 | 140,830,401 | 121,108,037 |
Common stock shares outstanding | 140,830,401 | 140,830,401 | 121,108,037 |
Series A Redeemable Convertible Preferred Stock [Member] |  |  |  |
Temporary equity par or stated value per share | $ / shares |  | $ 0.0001 |  | 0.0001
Temporary equity shares authorized | 0 | 0 | 60,000,000 |
Temporary equity shares issued | 0 | 0 | 60,000,000 |
Temporary equity shares outstanding | 0 | 0 | 60,000,000 |
Series B Redeemable Convertible Preferred Stock [Member] |  |  |  |
Temporary equity par or stated value per share | $ / shares |  | $ 0.0001 |  | 0.0001
Temporary equity shares authorized | 0 | 0 | 40,000,000 |
Temporary equity shares issued | 0 | 0 | 40,000,000 |
Temporary equity shares outstanding | 0 | 0 | 40,000,000 |
Series C Redeemable Convertible Preferred Stock [Member] |  |  |  |
Temporary equity par or stated value per share | $ / shares |  | $ 0.0001 |  | 0.0001
Temporary equity shares authorized | 0 | 0 | 147,068,133 |
Temporary equity shares issued | 0 | 0 | 147,068,133 |
Temporary equity shares outstanding | 0 | 0 | 147,068,133 |
Series D Redeemable Convertible Preferred Stock [Member] |  |  |  |
Temporary equity par or stated value per share | $ / shares |  | $ 0.0001 |  | 0.0001
Temporary equity shares authorized | 0 | 0 | 60,856,049 |
Temporary equity shares issued | 0 | 0 | 60,856,049 |
Temporary equity shares outstanding | 0 | 0 | 60,856,049 |
Series E Redeemable Convertible Preferred Stock [Member] |  |  |  |
Temporary equity par or stated value per share | $ / shares |  | $ 0.0001 |  | 0.0001
Temporary equity shares authorized | 0 | 0 | 144,073,367 |
Temporary equity shares issued | 0 | 0 | 144,073,367 |
Temporary equity shares outstanding | 0 | 0 | 144,073,367 |
Series F Redeemable Convertible Preferred Stock [Member] |  |  |  |
Temporary equity par or stated value per share | $ / shares |  | $ 0.0001 |  | $ 0.0001
Temporary equity shares authorized | 0 | 0 | 99,354,585 |
Temporary equity shares issued | 0 | 0 | 99,354,585 |
Temporary equity shares outstanding | 0 | 0 | 99,354,585 |
Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |
Current liabilities | ¥ | ¥ 2,789,346 |  | ¥ 2,089,447 |
Variable Interest Entity, Primary Beneficiary [Member] | Nonrecourse [Member] |  |  |  |
Current liabilities | 2,762,123 | $ 433,437 | 1,717,020 |
Non current liabilities | ¥ 178,844 | $ 28,065 | ¥ 76,373 |

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