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Commitment and contingencies (Details Narrative)
1 Months Ended
Mar. 25, 2024
CNY (¥)
Mar. 21, 2024
USD ($)
Mar. 21, 2024
CNY (¥)
Jan. 07, 2024
USD ($)
Jan. 07, 2024
CNY (¥)
Jan. 14, 2023
USD ($)
Jan. 14, 2023
CNY (¥)
Aug. 05, 2022
USD ($)
Aug. 05, 2022
CNY (¥)
Jul. 05, 2022
CNY (¥)
Apr. 20, 2021
USD ($)
Apr. 20, 2021
CNY (¥)
Oct. 31, 2019
USD ($)
Oct. 31, 2019
CNY (¥)
Jul. 05, 2022
USD ($)
Jul. 05, 2022
CNY (¥)
Apr. 20, 2021
CNY (¥)
Oct. 31, 2019
CNY (¥)
Related Party Transaction [Line Items]                                    
Loss contingency, damages sought, value   $ 7,163,361 ¥ 50,844,103.89               $ 46,454 ¥ 300,000            
Loss contingency damages sought interest                     24.00% 24.00%            
Lease deposit liability                     $ 58,855           ¥ 380,000  
Operating lease, payments           $ 61,638 ¥ 429,000                      
Cost, direct labor       $ 5,221,922 ¥ 37,064,159     $ 4,931,105 ¥ 35,000,000                  
Construction costs       7,171,990 50,905,352     $ 6,519,991 ¥ 46,277,593                  
Subsequent Event [Member]                                    
Related Party Transaction [Line Items]                                    
Cost, direct labor       5,221,922 37,064,159                          
Construction costs       $ 7,171,990 ¥ 50,905,352                          
Line of credit ¥ 56,000,000                                  
Line of credit term 2 years                                  
Settlement Agreement [Member]                                    
Related Party Transaction [Line Items]                                    
Related party unpaid purchase amount                   ¥ 170,000     $ 31,000 ¥ 200,000        
Remaining unpaid balance                         $ 5,000   $ 20,000 ¥ 131,850   ¥ 30,000