Before you enter the school, the school will post each student's name and student number on the corresponding bed, and then just sign in.
For me, the bamboo garden is better. It's in the back hill, and the environment is very good. When it snowed last winter, only the bamboo garden of Southwest University snowed. Dormitories have separate bathrooms, fans, telephones, etc. Some dorms are double rooms, but there is no water heater.
Nanyuan has a nice environment and ordinary conditions, but Yuan Longping lived there when he was studying. Many bedrooms are bunk beds, and the space is small, so you need to turn on the water yourself.
Good luck.