Monthly rent.

No definition available.

Name:	dtss_MonthlyRent
Namespace Prefix:	dtss_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of lease rent.

+ References

No definition available.

+ Details

Name:	dtss_PercentageOfLeaseRent
Namespace Prefix:	dtss_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying amount of the asset transferred to a third party to serve as a deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480657/210-10-S50-7

+ Details

Name:	us-gaap_DepositAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-4

+ Details

Name:	us-gaap_OperatingLeaseExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherCommitmentsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

+ References

+ Details

Name:	us-gaap_SecurityDeposit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_TypeOfArrangementAxis=dtss_LeaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=dtss_ShuhaiBeijingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=dtss_TianjinInformationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=dtss_GuohaoCenturyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=dtss_ShenzhenJingweiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=dtss_ShuhaiInformationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments (Details) - USD ($)						1 Months Ended	12 Months Ended
Commitments (Details) - USD ($)	Aug. 18, 2025	Dec. 10, 2024	Nov. 29, 2024	Aug. 16, 2024	Nov. 08, 2023	Aug. 31, 2020	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024	May 10, 2023
Commitments [Line Items]
Lease rent percent						3.00%
Security deposit							$ 72,654	$ 57,395
Rent expense							$ 167,377	$ 136,506	$ 167,969
Lease agreement [Member]
Commitments [Line Items]
Monthly rent						$ 29,651
Shuhai Beijing [Member] \| Lease agreement [Member]
Commitments [Line Items]
Monthly rent					$ 2,425
Deposit					7,929
Tianjin Information [Member] \| Lease agreement [Member]
Commitments [Line Items]
Monthly rent					8,409
Deposit					$ 27,496
Guohao Century [Member] \| Lease agreement [Member]
Commitments [Line Items]
Security deposit										$ 7,670
Shenzhen Jingwei [Member] \| Lease agreement [Member]
Commitments [Line Items]
Monthly rent	$ 3,366			$ 6,778
Deposit				$ 33,592
Security deposit	$ 6,732
Shuhai Information [Member] \| Lease agreement [Member]
Commitments [Line Items]
Monthly rent		$ 981	$ 3,498
Security deposit		$ 981	22,503
Rent expense			$ 3,498