What is the most unbearable thing for northerners to go to college in the south?

It's hard for northerners to go to the south. I think the most unbearable thing is the humid heat in the south.

In the spring rain season in the south, it rains constantly, and it is wet everywhere every day. It often rains in summer, especially in Nanjing, Wuhan and other places. It is extremely hot and humid in summer, and the sauna room is full, so you can't hide it.

It's very cold in the south in winter, there is no heating, and the bed is cold to the bone, which really hurts.