According to the theoretical requirements, you should swipe your campus card when you go in. And there will be security guards watching.

However, this is only theoretical. ...

In fact, only some special periods are so strict. In normal times, those security guards are lax. ...

As long as you know James's classmates, let them lend you the card. All you have to do is take the book, go in naturally, swipe your card, and then go in ... don't look at the security guards ...

Sometimes, you don't even need to use a plane ... but less. The risk is relatively high and uncertain.