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Segment Information - Summary of Reportable Segment (Details) ¥ 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 (¥)
Net revenues |  |  |  |  |
Total net revenues |  | ¥ 3,414,774 | $ 480,961 | ¥ 3,706,122 | ¥ 5,839,973
Loss from operations |  |  |  |  |
Unallocated expenses | [1] | (131,799) |  | (389,560) | (572,013)
Total loss from operations |  | (913,355) | (128,642) | (928,898) | (1,624,244)
Reconciliation |  |  |  |  |
Financial income |  | 89,020 | 12,538 | 34,656 | 45,658
Foreign currency exchange (loss) gain |  | 7,218 | 1,017 | (35,357) | (1,751)
Income from equity method investments, net |  | 10,122 | 1,426 | 12,548 | 5,978
Impairment loss of investments |  |  |  | (5,078) | (1,375)
Other (expenses) income, net |  | 53,558 | 7,543 | 103,501 | 27,775
Loss before income tax expenses |  | (753,437) | $ (106,118) | (818,628) | (1,547,959)
Color Cosmetics Brands |  |  |  |  |
Net revenues |  |  |  |  |
Total net revenues |  | 1,973,726 |  | 2,415,500 | 4,869,279
Loss from operations |  |  |  |  |
Total loss from operations |  | (352,147) |  | (476,998) | (823,296)
Skincare Brands |  |  |  |  |
Net revenues |  |  |  |  |
Total net revenues |  | 1,383,578 |  | 1,241,528 | 855,241
Loss from operations |  |  |  |  |
Total loss from operations |  | (431,268) |  | (63,095) | (220,854)
Others |  |  |  |  |
Net revenues |  |  |  |  |
Total net revenues |  | 57,470 |  | 49,094 | 115,453
Loss from operations |  |  |  |  |
Total loss from operations |  | ¥ 1,859 |  | ¥ 755 | ¥ (8,081)
[1] | (a) Unallocated expenses represent share-based compensation and amortization of intangible assets resulting from assets and business acquisitions, which are not allocated to segments.

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