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Prepayments and Other Assets, Net (Details) ¥ in Thousands, $ in Thousands	6 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2024 CNY (¥)	Mar. 31, 2024 CNY (¥)	Sep. 30, 2023 USD ($)	Apr. 10, 2023
Prepayments and Other Assets, Net [Line Items]
Prepayment of rent related to leases expiring	12 months		12 months
Third-parties rate per annum	5.00%	5.00%
Prepaid expense	$ 5,362,816			$ 3,602,000
All Parties [Member]
Prepayments and Other Assets, Net [Line Items]
Consideration amount	5,983,131	¥ 43,200
Prepaid expense	5,362,816		¥ 38,721,142
Business Combination [Member]
Prepayments and Other Assets, Net [Line Items]
Consideration amount	$ 5,000,000
Kaiye (Wenzhou) Water Project Development Co., Ltd [Member]
Prepayments and Other Assets, Net [Line Items]
Equity interest					100.00%
Ms. Zhao Dongfang [Member]
Prepayments and Other Assets, Net [Line Items]
Equity interest					3.40%

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of asset related to consideration paid in advance for other costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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