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Summary of significant accounting policies - Plant and equipment, net (Details) - USD ($)	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Summary of significant accounting policies
Depreciation	$ 0	$ 900,938	$ 5,361,955

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- References

No definition available.

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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