Summary of Significant Accounting Policies (Details) - Schedule of balances of the VIE - USD ($)	3 Months Ended	9 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Schedule of balances of the VIE [Abstract]
Revenues	$ 17,685		$ 152,924
Gross profit	7,774		86,000
Net loss	$ (785,680)	$ (235,541)	$ (1,881,939)	$ (944,617)

Amount of consolidated variable interest entity's gross profit.

No definition available.

Name:	dtss_VariableInterestEntityGrossProfit
Namespace Prefix:	dtss_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration