| Schedule of preferred shares activities |
| | | | | | | | | | | | | | | | | | | | | | | | | | | Series Seed | | Series Angel | | Series B | | Series C1 | | Series C2 | | | | | | | Preferred Shares | | Preferred Shares | | Preferred Shares | | Preferred Shares | | Preferred Shares | | Mezzanine Equity | | | | | | | | | | | | | | | | | | | | | | | Total | | | | | Number of | | | | Number of | | | | Number of | | | | Number of | | | | Number of | | | | Number of | | | | | shares | | Amount | | shares | | Amount | | shares | | Amount | | shares | | Amount | | shares | | Amount | | shares | | Amount | | | | | (RMB) | | | | (RMB) | | | | (RMB) | | | | (RMB) | | | | (RMB) | | | | (RMB) | Balance as of January 1,2023 | | 30,769,231 | | 430,851 | | 21,978,022 | | 312,510 | | 45,315,510 | | 685,325 | | 37,373,616 | | 726,861 | | 15,650,202 | | 299,345 | | 151,086,581 | | 2,454,892 | Accretion to Preferred Shares redemption value | | — | | 132,237 | | — | | 93,603 | | — | | 182,631 | | — | | 89,269 | | — | | 38,319 | | — | | 536,059 | Balance as of December 31, 2023 | | 30,769,231 | | 563,088 | | 21,978,022 | | 406,113 | | 45,315,510 | | 867,956 | | 37,373,616 | | 816,130 | | 15,650,202 | | 337,664 | | 151,086,581 | | 2,990,951 | Accretion to Preferred Shares redemption value | | — | | 128,963 | | — | | 89,808 | | — | | 160,932 | | — | | 35,232 | | — | | 14,996 | | — | | 429,931 | Balance as of December 31, 2024 | | 30,769,231 | | 692,051 | | 21,978,022 | | 495,921 | | 45,315,510 | | 1,028,888 | | 37,373,616 | | 851,362 | | 15,650,202 | | 352,660 | | 151,086,581 | | 3,420,882 | Accretion to Preferred Shares redemption value | | — | | (138,097) | | — | | (100,240) | | — | | (213,050) | | — | | (178,506) | | — | | (70,902) | | — | | (700,795) | Converted into ordinary shares(i) | | (30,769,231) | | (553,954) | | (21,978,022) | | (395,681) | | (45,315,510) | | (815,838) | | (37,373,616) | | (672,856) | | (15,650,202) | | (281,758) | | (151,086,581) | | (2,720,087) | Balance as of December 31, 2025 | | — | | — | | — | | — | | — | | — | | — | | — | | — | | — | | — | | — |
(i) | Upon the completion of the IPO in April 2025, all of issued and outstanding Preferred Shares automatically converted and re-designated on a one-for-one basis as Class A ordinary shares. |
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