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Accrued expenses and other current liabilities (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2020
CNY (¥)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
CNY (¥)
Accrued expenses and other current liabilities      
Deposits ¥ 15,343,647   ¥ 14,619,420
Salary and welfare 7,983,916   5,037,530
Rental fee payables 677,253   332,893
Internet data center fee 561,842   614,712
Liabilities for return allowances 496,005   425,135
Accrued administrative expenses 513,469   368,821
Professional fee 755,900   268,054
Vehicle fee 316,104   190,289
Interest payable 135,537   43,598
Payable related to employees' exercise of share-based awards 269,172   403,398
Others 2,981,726   2,352,330
Total ¥ 30,034,571 $ 4,602,999 ¥ 24,656,180