v3.26.1
Summary of significant accounting policies (Tables)
 6 Months Ended
Jun. 30, 2026
Accounting Policies [Abstract]  
Schedule of estimated useful lives
     
    Useful Life  
Office equipment   3 years  
Mechanical equipment   3 – 5 years  
Electronic and other equipment   3 – 5 years  
Vehicles   3 – 5 years  
Schedule of Non-controlling interests
                       
    December 31,
2025		     June 30,
2026		     June 30,
2026		  
    RMB     RMB     USD  
    (Audited)     (Unaudited)     (Unaudited)  
Ocean HK     (2,001,657 )     57,793       8,485  
HaiCloud Inc     7,175,508       12,599,757       1,849,940  
Total non-controlling interests     5,173,851       12,657,550       1,858,425