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Intangible assets, net | 6 Months Ended
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Jun. 30, 2024
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Intangible assets, net | Intangible assets, net Intangible assets, net consisted of the following:
| As of December 31, |  | As of June 30,
| 2023 |  | 2024
| RMB |  | RMB
Software | 121,950 |  |  | 143,461 |
Software license rights | 143,725 |  |  | 143,725 |
Trademark | 139 |  |  | 139 |
Patents | 2,655 |  |  | 141,224 |
Intangible assets | 268,469 |  |  | 428,549 |
Less: accumulated amortization | (86,183) |  |  | (130,945) |
Less: impairment | (2,945) |  |  | (3,570) |
Intangible assets, net | 179,341 |  |  | 294,034 |
The Group acquired patents of RMB138,569 in the asset acquisition (refer to Note 1(c)). The acquired patents are amortized over a period of ten years. Amortization of intangible assets was allocated as follows:
| Six Months Ended June 30,
| 2023 |  | 2024
| RMB |  | RMB
Cost of revenues | — |  |  | 23,954 |
Selling, general and administrative expenses | 4,902 |  |  | 4,605 |
Research and development expenses | 7,105 |  |  | 16,184 |
Total amortization | 12,007 |  |  | 44,743 |
In the six months ended June 30, 2024, an impairment loss of RMB625 was recognized for obsolete software, which was included in selling, general and administrative expenses. No impairment loss was recorded in the six months ended June 30, 2023.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/985-20/tableOfContent + Details
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