You should be talking about the teaching building in the temporary residence, on Lushan South Road. Hunan University stands at the gate of Hunan University. There is a big stone tablet that says Hunan University. After entering, it is Pailou Road. Go straight, about 500 to 600 meters to Dongfanghong Square (marked with the portrait of Chairman Mao), and then turn left to Lushan South Road. Go ahead 50 meters, and you will see the teaching building of Fu Lin Building (on the left side of the road). I believe you can find it.