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v3.24.1

Warrant liabilities (Details 2) - ¥ / shares | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 16, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Outstanding warrants Exercised | 218,247 |  |  |
Private Warrants [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |
Outstanding warrants, beginning |  | 270,500 | 270,500 |
Weighted Average Exercise Price Per Share , beginning |  | ¥ 11.50 | ¥ 11.50 |
Average remaining Period (Years) |  | 4 years | 5 years | 5 years
Outstanding warrants Issued |  |  |  |
Weighted Average Exercise Price Per Share Issued |  |  |  |
Outstanding warrants Forfeited |  |  |  |
Weighted Average Exercise Price Per Share Forfeited |  |  |  |
Outstanding warrants Exercised |  |  |  |
Weighted Average Exercise Price Per Share Exercised |  |  |  |
Outstanding warrants Expired |  |  |  |
Weighted Average Exercise Price Per Share Expired |  |  |  |
Outstanding warrants, beginning |  | 270,500 | 270,500 | 270,500
Weighted Average Exercise Price Per Share , beginning |  | ¥ 11.50 | ¥ 11.50 | ¥ 11.50

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