Summary of significant accounting policies (Details) - Schedule of disaggregated information of revenues - USD ($)	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Schedule of disaggregated information of revenues [Abstract]
Online music education academy subscription	$ 16,519,081	$ 4,453,957
Online concert subscription		2,330,000
Total revenue	$ 16,519,081	$ 6,783,957

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income after deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).