| Cover | Jan. 27, 2025 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 27, 2025 |
| Entity File Number | 001-42368 |
| Entity Registrant Name | Rising Dragon Acquisition Corp. |
| Entity Central Index Key | 0002018145 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Incorporation, State or Country Code | E9 |
| 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 |
| City Area Code | +86 |
| Local Phone Number | 18817777987 |
| Written Communications | true |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| 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 | |
| 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 | |
| Title of 12(b) Security | Ordinary Shares |
| Trading Symbol | RDAC |
| Security Exchange Name | NASDAQ |
| Rights [Member] | |
| Title of 12(b) Security | Rights |
| Trading Symbol | RDACR |
| Security Exchange Name | NASDAQ |
