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Research and Development Expenses (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2022 CNY (¥) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2020 CNY (¥)
Research and Development Expenses |  |  |  |
Employee compensation | ¥ 6,684,971 |  | ¥ 2,658,158 | ¥ 1,362,231
Design and development expenses | 3,276,915 |  | 1,572,834 | 778,463
Depreciation and amortization expenses | 333,097 |  | 214,312 | 255,544
Rental and related expenses | 193,132 |  | 53,846 | 51,123
Travel and entertainment expenses | 111,531 |  | 43,732 | 15,720
Others | 236,615 |  | 48,970 | 24,689
Total | ¥ 10,836,261 | $ 1,571,110 | ¥ 4,591,852 | ¥ 2,487,770

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- Definition The aggregate costs incurred for depreciation and amortization expenses during the reporting period charged as research and development. + References No definition available. + Details
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- Definition The aggregate costs incurred for design and development expenses during the reporting period charged as research and development. + References No definition available. + Details
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- Definition The aggregate costs incurred for employee compensation during the reporting period charged as research and development. + References No definition available. + Details
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- Definition The aggregate costs incurred for others during the reporting period charged as research and development. + References No definition available. + Details
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- Definition The aggregate costs incurred for rental and related expenses during the reporting period charged as research and development. + References No definition available. + Details
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- Definition The aggregate costs incurred for travel expenses during the reporting period charged as research and development. + References No definition available. + Details
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 912 -SubTopic 730 -Section 25 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6472174&loc=d3e58812-109433 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 + Details
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