v3.25.2
Cover - shares
6 Months Ended
Jun. 30, 2025
Aug. 14, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Jun. 30, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Entity Information [Line Items]    
Entity Registrant Name RISING DRAGON ACQUISITION CORP.  
Entity Central Index Key 0002018145  
Entity File Number 001-42368  
Entity Tax Identification Number 00-0000000  
Entity Incorporation, State or Country Code E9  
Current Fiscal Year End Date --12-31  
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 Incorporation, Date of Incorporation Mar. 08, 2024  
Entity Contact Personnel [Line Items]    
Entity Address, Address Line One No. 604, Yixing Road  
Entity Address, Address Line Two Wanbolin District  
Entity Address, Address Line Three Taiyuan City  
Entity Address, City or Town Shanxi Province  
Entity Address, Country CN  
Entity Address, Postal Zip Code 030024  
Entity Phone Fax Numbers [Line Items]    
City Area Code +86  
Local Phone Number 18817777987  
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   7,499,375
Units, each consisting of one Ordinary Share, par value $0.0001 per share, 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, par value $0.0001 per share,  
Trading Symbol RDACU  
Security Exchange Name NASDAQ  
Ordinary Shares    
Entity Listings [Line Items]    
Title of 12(b) Security Ordinary Shares  
Trading Symbol RDAC  
Security Exchange Name NASDAQ  
Rights    
Entity Listings [Line Items]    
Title of 12(b) Security Rights  
Trading Symbol RDACR  
Security Exchange Name NASDAQ