It depends on the regulations of the school. Some schools don't allow students to unplug their own network cables, but you can try. Go to the nearest local telecom and explain your purpose. You will prepare anything you need, usually just give you a "cat", which will let you surf the Internet anyway.

If you use one, it is usually enough for telecom to open 5 12, because the bandwidth you open 5 12K for telecom is actually 1M, so there is no problem for both games and online videos. If you download it, you can download it on the campus network, which is fast and free.

The price is generally 700 yuan. It depends on the specific place.

The disconnection of the online school does not affect your access to the Internet.