There are two ways. The first one is China Mobile, and the phone bill in 300 yuan will be sent to the network for half a year (I don't know if it is still being done now). Four people in our dormitory buy a router (we are using it). The second is E-mail. The phone bill of 30 yuan per month must be paid every month. If it stops, the network will be disconnected. The network speed of 2M is very stable. In addition, mobile wifi 40 yuan for 250 hours is a notebook. See for yourself.

In short, there is plenty of time in college, so I'm still going to run!

Good luck.