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Parent only financial information (Tables) | 12 Months Ended
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Dec. 31, 2024
Condensed Financial Information Disclosure [Abstract] |
Schedule of condensed balance sheets |
| As of December 31,
| 2023 |  | 2024
| RMB |  | RMB
ASSETS |  |  |
Current assets |  |  |
Cash | 12,947 |  |  | 4,105 |
Short-term investments | 121,876 |  |  | 130,525 |
Prepayments and other assets | — |  |  | 14,578 |
Amounts due from related parties | 4,288,934 |  |  | 4,445,227 |
Total current assets | 4,423,757 |  |  | 4,594,435 |
Non-current assets |  |  |
Long-term investments | 48,580 |  |  | 5,316 |
Total non-current assets | 48,580 |  |  | 5,316 |
Total assets | 4,472,337 |  |  | 4,599,751 |
Current Liabilities |  |  |
Convertible notes payable, current | — |  |  | 470,610 |
Accrued expenses and other current liabilities | 64,924 |  |  | 99,057 |
Amounts due to related parties | 180,698 |  |  | 170,768 |
Share of losses in excess of investments in subsidiaries | 4,689,593 |  |  | 5,618,976 |
Total current liabilities | 4,935,215 |  |  | 6,359,411 |
Non-current liabilities |  |  |
Convertible notes payable, non-current | 455,701 |  |  | — |
Total non-current liabilities | 455,701 |  |  | — |
Total liabilities | 5,390,916 |  |  | 6,359,411 |
SHAREHOLDERS’ DEFICIT |  |  |
Class A Ordinary Shares | 9 |  |  | 10 |
Class B Ordinary Shares | 1 |  |  | 1 |
Treasury Shares | — |  |  | (7,435) |
Additional paid-in capital | 6,096,675 |  |  | 6,214,270 |
Accumulated deficit | (6,670,686) |  |  | (7,603,001) |
Accumulated other comprehensive loss | (344,578) |  |  | (363,505) |
Total shareholders’ deficit | (918,579) |  |  | (1,759,660) |
Total liabilities and shareholders’ deficit | 4,472,337 |  |  | 4,599,751 |
Schedule of condensed statements of comprehensive loss |
| Year end of December 31,
| 2022 |  | 2023 |  | 2024
| RMB |  | RMB |  | RMB
General and administrative expenses | (26,005) |  |  | (24,089) |  |  | (26,125) |
Interest income | 6,565 |  |  | 5,411 |  |  | 11,644 |
Interest expense | (3,132) |  |  | (25,608) |  |  | (59,842) |
Foreign currency exchange (losses)/gains | (14,459) |  |  | 1,245 |  |  | (91) |
Change in fair value of an equity security | (16,843) |  |  | (22,451) |  |  | (44,019) |
Share of losses from subsidiaries | (1,511,004) |  |  | (875,014) |  |  | (813,882) |
Loss before income taxes | (1,564,878) |  |  | (940,506) |  |  | (932,315) |
Income tax expenses | — |  |  | — |  |  | — |
Net loss | (1,564,878) |  |  | (940,506) |  |  | (932,315) |
Schedule of condensed statements of cash flows |
| Year ended December 31,
| 2022 |  | 2023 |  | 2024
| RMB |  | RMB |  | RMB
Net cash used in operating activities | (22,893) |  |  | (43,242) |  |  | (46,203) |
Net cash (used in)/provided by investing activities | (734,299) |  |  | (123,944) |  |  | 59,022 |
Net cash provided by/(used in) financing activities | 729,767 |  |  | 59,177 |  |  | (21,898) |
Effect of foreign currency exchange rate changes on cash | (12,308) |  |  | 1,934 |  |  | 237 |
Net decrease in cash | (39,733) |  |  | (106,075) |  |  | (8,842) |
Cash at beginning of the year | 158,755 |  |  | 119,022 |  |  | 12,947 |
Cash at end of the year | 119,022 |  |  | 12,947 |  |  | 4,105 |

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