If it is the academic affairs office of the college, go to the building of your college and ask the security guard on the first floor.

The academic affairs office of the school is located on the 1 floor of the office building. I forgot the specific house number. Anyway, you can open the first room with your left hand after you go in. If it really doesn't work, you can still ask the security guard.

The office building is to the south of the west gate. Grandpa Mao is like that building in the south. Go in through the main entrance and walk to Grandpa Mao's residence. Turn right and go to the end.