how to reach minjiang university in Fuzhou city from Southern medical university in Guangzhou city

There is no direct train from GZ to FZ. And if by long-distance bus, it takes about 12-13 hours. So you are suggested to take a plane from GZ to Fuzhou first.
From South Medical University, you can take subway line 3 to get to the airport south station, Exit C first.
After arriving at Fuzhou airport, take shuttle bus to get to Apollo Hotel first. Then take a taxi to go to Minjiang University. The cab fare is around CNY 50 in the day time.