XML 17 R1.htm IDEA: XBRL DOCUMENT v3.25.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2024
Mar. 11, 2025
Jun. 30, 2024
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Financial Statement Error Correction [Flag] false    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag false    
Amendment Flag false    
Document Period End Date Dec. 31, 2024    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Documents Incorporated by Reference [Text Block] None    
Entity Information [Line Items]      
Entity Registrant Name YHN Acquisition I Limited    
Entity Central Index Key 0002020987    
Entity File Number 001-42251    
Entity Tax Identification Number 00-0000000    
Entity Incorporation, State or Country Code D8    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Shell Company true    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
Entity Public Float     $ 0
Entity Contact Personnel [Line Items]      
Entity Address, Address Line One 2/F, Hang Seng Building    
Entity Address, Address Line Two 200 Hennessy Road    
Entity Address, City or Town Wanchai    
Entity Address, Country HK    
Entity Address, Postal Zip Code 00000    
Entity Phone Fax Numbers [Line Items]      
City Area Code +852    
Local Phone Number 5499 8101    
Entity Listings [Line Items]      
Entity Common Stock, Shares Outstanding   7,750,000  
Units, each consisting of one Ordinary Share, no par value, and one Right entitling the holder to receive one-tenth of an Ordinary Share      
Entity Listings [Line Items]      
Title of 12(b) Security Units, each consisting of one Ordinary Share, no par value, and one Right entitling the holder to receive one-tenth of an Ordinary Share    
Trading Symbol YHNAU    
Security Exchange Name NASDAQ    
Ordinary Share      
Entity Listings [Line Items]      
Title of 12(b) Security Ordinary Share    
Trading Symbol YHNA    
Security Exchange Name NASDAQ    
Rights      
Entity Listings [Line Items]      
Title of 12(b) Security Rights    
Trading Symbol YHNAR    
Security Exchange Name NASDAQ