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Property and Equipment, Net (Tables) | 12 Months Ended
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Dec. 31, 2021
Property, Plant and Equipment [Abstract] |
Schedule of Property and Equipment, Net | Property and equipment, net consists of the following:
|  | As of December 31, |
|  | 2020 |  |  | 2021 |  |  | 2021 |
|  | RMB |  |  | RMB |  |  | US$ |
|  | (in thousands) |
Electronic office equipment |  |  | 29,720 |  |  |  | 58,463 |  |  |  | 9,174 |
Leasehold improvements |  |  | 250,745 |  |  |  | 555,941 |  |  |  | 87,239 |
Furniture, fixtures and equipment |  |  | 110,778 |  |  |  | 177,621 |  |  |  | 27,873 |
Total |  |  | 391,243 |  |  |  | 792,025 |  |  |  | 124,286 |
Less: |  |  |  |  |  |  |  |  |  |  |  |
Accumulated depreciation |  |  | (133,098 | ) |  |  | (328,367 | ) |  |  | (51,528 | )
Construction in progress |  |  | 14,546 |  |  |  | 8,713 |  |  |  | 1,367 |
Total |  |  | 272,691 |  |  |  | 472,371 |  |  |  | 74,125 |
Schedule of Depreciation Included in Consolidated Statements of Income and Comprehensive Income | Depreciation expense was RMB34.7 million, RMB115.4 million and RMB213.1 million (US$33.4 million) for the years ended December 31, 2019, 2020 and 2021, respectively, and were included in the following financial statement line items in the consolidated statements of comprehensive loss:
|  | For the years ended December 31, |
|  | 2019 |  |  | 2020 |  |  | 2021 |  |  | 2021 |
|  | RMB |  |  | RMB |  |  | RMB |  |  | US$ |
|  | (in thousands) |
Fulfillment expenses |  |  | 31,988 |  |  |  | 107,333 |  |  |  | 195,022 |  |  |  | 30,603 |
Sales and marketing expenses |  |  | 865 |  |  |  | 2,018 |  |  |  | 2,666 |  |  |  | 419 |
General and administrative expenses |  |  | 1,520 |  |  |  | 4,731 |  |  |  | 7,395 |  |  |  | 1,160 |
Product development expenses |  |  | 361 |  |  |  | 1,272 |  |  |  | 7,999 |  |  |  | 1,255 |
Total |  |  | 34,734 |  |  |  | 115,354 |  |  |  | 213,082 |  |  |  | 33,437 |

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