Are Jiujiang Railway Station and High-speed Railway Station the same?

Yes.

Jiujiang Railway Station and high-speed rail station are now the same station. Jiujiang Railway Station is connected to the Changjiu-Jiujiu Intercity Railway, Beijing-Kowloon Railway, Qujiu High-speed Railway, Tongjiu Railway, and Wuhan-Kowloon High-speed Railway. It is a comprehensive railway station integrating high-speed railways, ordinary trains and high-speed trains. In the past, there were no high-speed rail stations in Jiujiang, but with the development of railway transportation, the Jiujiang Railway Station now has high-speed rail services. Therefore, whether it is an ordinary train or a high-speed train, you can take it at the same station.

It should be noted that the bus bound for Wuhan is taken at Lushan Railway Station.