If you want to enter the library of Peking University, it's easy. You can give him your ID card and pay three yuan to read it. But you can't borrow books.

If you bring a notebook, I suggest you bring a power cord, because the power socket inside is occupied by the notebook, so you have multiple sockets.

The environment inside is good. You can take some bread out to eat. It's no problem to watch it for a day.

Bless you, come on.