Operating leases (Details) |
Sep. 30, 2025
USD ($)
|
Sep. 30, 2025
CNY (¥)
|
Mar. 31, 2025
USD ($)
|
Mar. 31, 2025
CNY (¥)
|
Mar. 31, 2024
CNY (¥)
|
|---|---|---|---|---|---|
| Operating Leases | |||||
| Operating lease right-of-use assets | $ 1,073,688 | ¥ 7,643,582 | $ 932,314 | ¥ 6,637,141 | ¥ 5,469,166 |
| Operating lease liabilities, current | 248,688 | 1,770,413 | 254,821 | 1,814,071 | 1,081,370 |
| Operating lease liabilities, non-current | 921,291 | 6,558,669 | 751,050 | 5,346,727 | 4,859,692 |
| Total operating lease liabilities | $ 1,169,979 | ¥ 8,329,082 | $ 1,005,871 | ¥ 7,160,798 | ¥ 5,941,062 |