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Advances to Suppliers - Schedule of Advance to Suppliers (Details) - USD ($)	Mar. 31, 2025	Mar. 31, 2024
Schedule of Advance to Suppliers [Abstract]
Advance to suppliers	$ 775,607	$ 404,989
Less: reserve for vendor non-performance on advances	(342,467)	(222,914)
Advance to suppliers, net	$ 433,140	$ 182,075

X

- Definition

Represents carrying value of capitalized payments made in advance for inventory that is expected to be received within one year or the normal operating cycle, if longer before allowance for doubtful accounts.

+ References

No definition available.

+ Details

Name:	cjjd_AdvancesOnInventoryPurchasesGross
Namespace Prefix:	cjjd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the allowance for advances to suppliers.

+ References

No definition available.

+ Details

Name:	cjjd_AllowanceForAdvancesToSuppliers
Namespace Prefix:	cjjd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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

X

- Definition

Amount of consideration paid in advance for supplies that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (g)(7)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483467/210-10-45-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 340
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483032/340-10-45-1

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 340
-SubTopic 10
-Name Accounting Standards Codification
-Section 05
-Paragraph 5
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482955/340-10-05-5

+ Details

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