Related party transactions - Schedule of Balances with Related Parties (Details) - CNY (¥) ¥ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Included in amount due to related parties as other payables and accruals (Note 17) | ||
| Balances with related parties, included in amount due to related parties as other payables and accruals | ¥ 147,221 | ¥ 3,353 |
| Shenzhen Yuanwanghechu Technology Co., Ltd. [Member] | ||
| Included in amount due from related parties (Note 9) | ||
| Amount due from related parties | 0 | 1,206 |
| Newlink [Member] | ||
| Included in amount due to related parties as other payables and accruals (Note 17) | ||
| Balances with related parties, included in amount due to related parties as other payables and accruals | 147,005 | 3,284 |
| Huzhou Zhidianlaile New Energy Technology Co., Ltd. [Member] | ||
| Included in amount due to related parties as other payables and accruals (Note 17) | ||
| Balances with related parties, included in amount due to related parties as other payables and accruals | ¥ 216 | ¥ 69 |