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Fixed Assets (Details) - USD ($)	Mar. 31, 2020	Jun. 30, 2019
Subtotal	$ 381,973	$ 140,991
Less: accumulated depreciation	129,658	99,875
Total	252,315	41,116
Furniture and fixtures [Member]
Subtotal	89,439	83,437
Vehicle [Member]
Subtotal	2,823	2,913
Leasehold improvement [Member]
Subtotal	137,826
Office equipment [Member]
Subtotal	$ 151,885	$ 54,641

X

- Definition

Amount of accumulated depreciation, depletion and amortization for fixed assets.

+ References

No definition available.

+ Details

Name:	dtss_AccumulatedDepreciationDepletionAndAmortizationFixedAssets
Namespace Prefix:	dtss_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount before accumulated depreciation, depletion and amortization of fixed assets.

+ References

No definition available.

+ Details

Name:	dtss_FixedAssetsGross
Namespace Prefix:	dtss_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of fixed assets net.

+ References

No definition available.

+ Details

Name:	dtss_FixedAssetsNet
Namespace Prefix:	dtss_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_VehiclesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdsAndLeaseholdImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_OfficeEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: