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Retirement Benefits (Details Narrative)	Dec. 31, 2024
Retirement Benefits [Abstract]
Percentage of eligible compensation	15.00%

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- Definition

Percentage of eligible compensation.

+ References

No definition available.

+ Details

Name:	YHGJ_PercentageOfEligibleCompensation
Namespace Prefix:	YHGJ_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

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- References

No definition available.

+ Details

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