Operating leases (Details Narrative) |
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] | ||||||
| Operating Lease, Expense | $ 195,576 | ¥ 1,392,307 | ¥ 723,929 | $ 249,924 | ¥ 1,779,212 | ¥ 872,173 |
| Minimum [Member] | ||||||
| DisclosureLineElements [Line Items] | ||||||
| Lease terms | 2 years | 2 years | 2 years | 2 years | ||
| Maximum [Member] | ||||||
| DisclosureLineElements [Line Items] | ||||||
| Lease terms | 5 years | 5 years | 5 years | 5 years | ||