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Intangible assets, net (Tables) | 12 Months Ended
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Dec. 31, 2024
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Schedule of intangible assets, net | In determining the useful life of an intangible asset, the Group considers the factors such as the expected use of the asset by the Group, and any legal, regulatory, or contractual provisions that may limit the useful life:
Category |  | Estimated useful life
Software |  | 3 years
Distribution and licensing rights |  | 3 - 10 years
Patent |  | 3 years
Trademarks |  | 10 years
Developed technology |  | 10 years
Intangible assets, net consisted of the following:
| As of December 31,
| 2023 |  | 2024
| RMB |  | RMB
Software | 121,950 |  |  | 164,369 |
Distribution and licensing rights | 143,725 |  |  | 185,363 |
Trademark | 139 |  |  | 270 |
Patent | 2,655 |  |  | 2,655 |
Developed technology (refer to Note 3.c) | — |  |  | 138,569 |
Intangible assets | 268,469 |  |  | 491,226 |
Less: accumulated amortization | (86,183) |  |  | (177,871) |
Less: impairment | (2,945) |  |  | (3,578) |
Intangible assets, net | 179,341 |  |  | 309,777 |
Schedule of amortization expenses on intangible assets allocated to expense items | Amortization of intangible assets was allocated as follows:
| Year ended December 31,
| 2022 |  | 2023 |  | 2024
| RMB |  | RMB |  | RMB
Cost of revenues | — |  |  | 7,985 |  |  | 48,160 |
Selling, general and administrative expenses | 9,987 |  |  | 10,047 |  |  | 8,882 |
Research and development expenses | 14,045 |  |  | 13,808 |  |  | 34,422 |
Total depreciation expenses | 24,032 |  |  | 31,840 |  |  | 91,464 |
Schedule of unrealized loss on investments | Impairment loss on obsolete and damaged intangible assets was allocated as follows:
| Year ended December 31,
| 2022 |  | 2023 |  | 2024
| RMB |  | RMB |  | RMB
Selling, general and administrative expenses | — |  |  | 2,662 |  |  | 648 |
Research and development expenses | — |  |  | 283 |  |  | — |
Total impairment loss | — |  |  | 2,945 |  |  | 648 |
Schedule of finite-lived intangible assets, future amortization expense | Estimated amortization expenses relating to the existing intangible assets with finite lives for the next five years is as follows:
| As of December 31,
| RMB
2025 | 101,054 |
2026 | 85,668 |
2027 | 30,450 |
2028 | 18,220 |
2029 | 17,934 |

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-6 + Details
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