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Depreciation, amortization, shipping and handling expenses - Summary of Other Operating Income (Detail)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Dec. 31, 2020
CNY (¥)
Disclosure Of Information On Income Statement [line items]        
Interest income ¥ 131,879 $ 18,970 ¥ 132,083 ¥ 166,970
Dividend income from quoted equity securities 13 2 168 166
Gain on disposal of associate 1,329 191 0  
Gain on disposal of property, plant and equipment 6,535 940 1,224  
Gain on disposal of quoted equity securities 2,291 330 5,416 874
Gain on disposal of right-of-use assets 3,929 565 14,714 2,574
Government grants 176,264 25,355 152,932 209,793
Fair value gain on quoted equity securities 0 0 138  
Fair value gain on foreign exchange forward contract 0 0 0 999
Foreign exchange gain, net 0 0 0 3,217
Others 12,109 1,742 19,496 15,676
Other operating income ¥ 334,349 $ 48,095 ¥ 326,171 ¥ 400,269