Subsequent events (Details Narrative)	12 Months Ended
Dec. 31, 2023
May 13, 2024 [Member]
Statement [Line Items]
Purchase agreement	the Purchaser agreed to purchase the Target in exchange for nominal cash consideration of US$1. Upon the closing of the transaction (the “Disposition”) contemplated by the Disposition SPA, the Purchaser will become the sole shareholder of the Target and as a result, assume all assets and liabilities of the Target and subsidiaries owned or controlled by the Target. The gains of RMB 71.7 million that is net of consideration to be expected

Subsequent events (Details Narrative)

12 Months Ended

Dec. 31, 2023

the Purchaser agreed to purchase the Target in exchange for nominal cash consideration of US$1. Upon the closing of the transaction (the “Disposition”) contemplated by the Disposition SPA, the Purchaser will become the sole shareholder of the Target and as a result, assume all assets and liabilities of the Target and subsidiaries owned or controlled by the Target. The gains of RMB 71.7 million that is net of consideration to be expected