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Other operating income - Summary of Other Operating Income (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥)
Disclosure Of Information On Income Statement [line items] |  |  |  |
Interest income | ¥ 154,129 | $ 21,697 | ¥ 131,879 | ¥ 132,083
Dividend income from quoted equity securities | 0 | 0 | 13 | 168
Gain on disposal of associate | 0 | 0 | 1,329 | 0
Gain on disposal of property, plant and equipment | 778 | 110 | 6,535 | 1,224
Gain on disposal of quoted equity securities | 0 | 0 | 2,291 | 5,416
Gain on disposal of right-of-use assets | 7,632 | 1,074 | 3,929 | 14,714
Gain on disposal of subsidiary | 113,042 | 15,913 | 0 | 0
Recognition of net gain upon fulfillment of performance obligation relating to capitalized contract asset | 11,696 | 1,646 | 0 | 0
Government grants | 171,937 | 24,204 | 176,264 | 152,932
Fair value gain on quoted equity securities | 0 | 0 | 0 | 138
Others | 10,086 | 1,421 | 12,109 | 19,496
Other operating income | ¥ 469,300 | $ 66,065 | ¥ 334,349 | ¥ 326,171

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