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v3.25.2

Schedule of concentration of credit risk (Details) | 6 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2025 CNY (¥) | Mar. 31, 2024 CNY (¥) | Mar. 31, 2025 USD ($) | Mar. 31, 2025 CNY (¥) | Sep. 30, 2024 CNY (¥)
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration of customers amount |  |  |  | $ 2,350,138 | ¥ 17,054,250 | ¥ 12,677,175 |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer A [Member] |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration of customers amount | ¥ 42,257,767 | ¥ 43,320,274 |  |  |  |  |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer B [Member] |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration of customers amount | 10,051,313 | 3,476,508 |  |  |  |  |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer C [Member] |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration of customers amount | 34,440,743 | 16,651,004 |  |  |  |  |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer A [Member] |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration of customers amount |  |  |  |  | 3,826,469 | 4,525,495 |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer B [Member] |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration of customers amount |  |  |  |  | 6,706,071 | 7,055,869 |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer C [Member] |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration of customers amount |  |  |  |  | 1,748,863 | 1,748,863 |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer D [Member] |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration of customers amount |  |  |  |  | ¥ 3,177,983 |  | [1]
Total Purchases [Member] | Supplier Concentration Risk [Member] | Supplier A [Member] |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration of suppliers amount | 18,600,197 |  | [1] |  |  |  |
Total Purchases [Member] | Supplier Concentration Risk [Member] | Supplier B [Member] |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration of suppliers amount | 10,377,124 |  | [1] |  |  |  |
Total Purchases [Member] | Supplier Concentration Risk [Member] | Supplier C [Member] |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |
Concentration of suppliers amount | ¥ 7,641,441 |  | [1] |  |  |  |
[1] | Represents less than 10%

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