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PRIVATE PLACEMENT (Details Narrative) - $ / shares	Sep. 19, 2024	Sep. 30, 2025
IPO [Member] | Private Placement Units [Member]
Subsidiary, Sale of Stock [Line Items]
Stock issued new, shares	250,000
Private Placement [Member]
Subsidiary, Sale of Stock [Line Items]
Price per unit		$ 10.00

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- References

No definition available.

+ Details

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Namespace Prefix:	YHNA_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- 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

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

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: