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Bank Loans (Details) ¥ in Thousands, $ in Thousands |  |  | 6 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2024 USD ($) | Mar. 31, 2024 CNY (¥) | Jul. 28, 2023 USD ($) | Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) | Sep. 30, 2023 USD ($) | Jul. 28, 2023 CNY (¥) | Feb. 15, 2023 USD ($) | Feb. 15, 2023 CNY (¥) | Jan. 16, 2023 USD ($) | Jan. 16, 2023 CNY (¥) | Sep. 15, 2022 USD ($) | Sep. 15, 2022 CNY (¥) | Sep. 14, 2022 USD ($) | Sep. 14, 2022 CNY (¥) | Apr. 19, 2022 USD ($) | Apr. 19, 2022 CNY (¥)
Bank Loans [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short term loan maturing term |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |
Loan amount obtained | $ 3,240,863 |  |  | $ 3,240,863 |  | $ 3,207,237 |  |  |  |  |  |  |  |  |  |  |
Repayment of principal amount |  |  |  |  | $ 1,654,219 |  |  |  |  |  |  |  |  |  |  |  |
Weighted average annual interest rate |  |  |  | 6.60% | 6.20% |  |  |  |  |  |  |  |  |  |  |  |
Interest expenses on loans |  |  |  | $ 106,741 | $ 92,445 |  |  |  |  |  |  |  |  |  |  |  |
Longwan RCB [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Loans [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan amount obtained |  |  |  |  |  |  |  |  |  | $ 678,643 | ¥ 4,900,000 | $ 257,607 | ¥ 1,860,000 | $ 830,990 | ¥ 6,000,000 | $ 360,096 | ¥ 2,600,000
Fixed annual interest rate |  |  |  |  |  |  |  |  |  | 4.56% | 4.56% | 8.10% | 8.10% | 5.45% | 5.45% | 8.10% | 8.10%
Repayment of principal amount | $ 63,709 | ¥ 460,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Wenzhou Minshang Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Loans [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan amount obtained |  |  |  |  |  |  |  | $ 1,177,236 | ¥ 8,500,000 |  |  |  |  |  |  |  |
Fixed annual interest rate |  |  |  |  |  |  |  | 7.50% | 7.50% |  |  |  |  |  |  |  |
China Construction Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bank Loans [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lines of credit, term |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan facility amount |  |  | $ 246,000 |  |  |  | ¥ 34,071 |  |  |  |  |  |  |  |  |  |
Fixed rate |  |  | 3.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |

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