how to get from Shanghai to Jiujiang in Jiangxi Province..flight ? car ? train ?

There are two methods providing for you.
The first and the fastest method is to take a direct flight to reach, which takes about 1 hour and 25 minutes. The flight is available on Tue., Fri. and Sun..

The second method is to take a train, which costs about 12 hours and a half on the way. There are only two trains, K751 and K253.
I think you can choose on your own situation.