| Summary of assets, liabilities, statement of operations and cash flows of discontinued operations |
| | | | | | | As of December 31, | | | 2023 | | 2024 | | | RMB | | RMB | Assets | | | | | Current assets | | | | | Cash and cash equivalents | | 285,310 | | — | Restricted cash | | 125,718 | | — | Short-term deposits | | 188,570 | | — | Short-term investments | | 51,864 | | — | Accounts and notes receivable from third parties | | 189,966 | | — | Accounts receivable from a related party | | 319,858 | | — | Other receivables from related parties | | 124 | | — | Inventories, net | | 284,916 | | — | Prepaid expenses and other current assets | | 85,353 | | — | Long-term deposits-current portion | | 30,000 | | — | Total current assets | | 1,561,679 | | — | Non-current assets | | | | | Property, plant and equipment, net | | 35,759 | | — | Deferred tax assets | | 6,065 | | — | Prepaid expenses and other non-current assets | | 8,289 | | — | Right-of-use assets, net | | 12 | | — | Long-term investment | | 20,300 | | — | Total non-current assets | | 70,425 | | — | Total assets | | 1,632,104 | | — | | | | | | Liabilities | | | | | Current liabilities | | | | | Accounts and notes payable | | 348,879 | | — | Advances from customers | | 101,505 | | — | Accrued expenses and other liabilities | | 131,400 | | — | Amount due to related parties | | 15,024 | | — | Short-term borrowing | | 100,000 | | — | Income tax payables | | 16,131 | | — | Lease liabilities due within one year | | 23 | | — | Total current liabilities | | 712,962 | | — | Accrued expenses and other liabilities - non-current portion | | 12,766 | | — | Total non-current liabilities | | 12,766 | | — | | | | | | Total liabilities | | 725,728 | | — |
| | | | | | | | | For the year ended December 31, | | | 2022 | | 2023 | | 2024 | | | RMB | | RMB | | RMB | Net revenues: | | | | | | | A related party | | 66,742 | | 24,434 | | 5,821 | Third parties | | 1,375,744 | | 830,216 | | 293,050 | Total net revenues | | 1,442,486 | | 854,650 | | 298,871 | | | | | | | | Cost of revenues | | (1,299,896) | | (807,146) | | (297,289) | | | | | | | | Gross profit | | 142,590 | | 47,504 | | 1,582 | Operating expenses: | | | | | | | Research and development expenses | | (89,993) | | (74,032) | | (41,245) | Selling and marketing expenses | | (332,602) | | (187,156) | | (54,681) | General and administrative expenses | | (61,192) | | (24,162) | | (7,667) | | | | | | | | Total operating expenses | | (483,787) | | (285,350) | | (103,593) | | | | | | | | Other income, net | | 9,229 | | 8,623 | | 4,320 | | | | | | | | Loss from operations | | (331,968) | | (229,223) | | (97,691) | | | | | | | | Interest and investment income (loss), net | | (138) | | 13,062 | | 3,846 | Other non-operating loss | | (1) | | (1,500) | | — | | | | | | | | Loss before income tax (expenses) credits | | (332,107) | | (217,661) | | (93,845) | | | | | | | | Income tax (expenses) credits | | (18,621) | | 11,853 | | 11,504 | | | | | | | | Net loss from discontinued operations | | (350,728) | | (205,808) | | (82,341) | | | | | | | | Net cash (used in) provided by discontinued operating activities | | (418,866) | | (144,547) | | 135,033 | Net cash provided by discontinued investing activities | | 469,481 | | 92,023 | | 136,918 | Net cash (used in) provided by discontinued financing activities | | — | | 100,000 | | (30,000) |
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