General and administrative expenses (Details) |
6 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|
|
Sep. 30, 2025
USD ($)
|
Sep. 30, 2025
CNY (¥)
|
Sep. 30, 2024
CNY (¥)
|
Mar. 31, 2025
USD ($)
|
Mar. 31, 2025
CNY (¥)
|
Mar. 31, 2024
CNY (¥)
|
|
| DisclosureLineElements [Line Items] | ||||||
| Depreciation | $ 21,620 | ¥ 153,914 | ¥ 132,329 | $ 36,031 | ¥ 256,508 | ¥ 146,013 |
| Total general and administrative expenses | 921,249 | 6,558,371 | 4,075,201 | 1,519,616 | 10,818,146 | 9,436,963 |
| S G And A Expenses [Member] | ||||||
| DisclosureLineElements [Line Items] | ||||||
| Salaries and employee benefit | 436,586 | 3,108,053 | 2,929,142 | |||
| Service charge | 651,206 | 4,635,935 | 3,402,078 | |||
| Travel, Meals and Entertainment | 52,476 | 373,576 | 850,851 | |||
| Rental | 257,421 | 1,832,580 | 1,185,443 | |||
| Depreciation | 22,425 | 159,642 | 127,339 | |||
| Others | 99,502 | 708,360 | 942,110 | |||
| Total general and administrative expenses | $ 1,519,616 | ¥ 10,818,146 | ¥ 9,436,963 | |||
| S G And A Expense [Member] | ||||||
| DisclosureLineElements [Line Items] | ||||||
| Salaries and employee benefit | 260,452 | 1,854,155 | 1,552,223 | |||
| Service charge | 317,997 | 2,263,819 | 759,786 | |||
| Travel, Meals and Entertainment | 15,561 | 110,780 | 286,672 | |||
| Rental | 202,536 | 1,441,855 | 694,961 | |||
| Depreciation | 12,379 | 88,129 | 0 | |||
| Others | 112,324 | ¥ 799,633 | ¥ 781,559 | |||
| Total general and administrative expenses | $ 921,249 | |||||