v3.26.1
Related party transactions (Tables)
6 Months Ended 12 Months Ended
Sep. 30, 2025
Mar. 31, 2025
Related Party Transactions [Abstract]    
Schedule of amounts due from related parties
               
   As of 
   March 31,   September 30, 
   2025   2025 
   RMB   RMB   US$ 
   (Audited)   (Unaudited) 
Lirong Liu   1,339,000    449,000    63,071 
    1,339,000    449,000    63,071 
            
   As of March 31, 
   2024   2025 
   RMB   RMB   US$ 
Lirong Liu   126,400    1,339,000    188,088 
    126,400    1,339,000    188,088 
Schedule of amount due to related parties
               
   As of March 31, 
   March 31,   September 30, 
   2025   2025 
   RMB   RMB   US$ 
  

(Audited)

   (Unaudited) 
Minghui Liu (i)   19,418,353    7,904,327    1,110,314 
Conggang Chen   691,369    634,095    89,071 
    20,109,722    8,538,422    1,199,385 

 

(i)        Minghui Liu provided the interest-free loans to the Group, which are repayable on demand based on Minghui Liu’s funding needs, to support the Group’s business operation.
            
   As of March 31, 
   2024   2025 
   RMB   RMB   US$ 
Minghui Liu (i)   18,980,310    19,418,353    2,727,680 
Conggang Chen   193,626    691,369    97,116 
    19,173,936    20,109,722    2,824,796 

 

(i)        Minghui Liu provided the interest-free loans to the Group, which are repayable on demand based on Minghui Liu’s funding needs, to support the Group’s business operation.