I found it by accident when I went to borrow books. It's been a long time, and I can't remember it clearly. This is very similar to your situation. He talked with the staff for a while, but finally he didn't want it and asked for half. I can't remember clearly. 1 month and 1 day are 20 cents. I remember the manager told him to arrive in 40 yuan at 30.

What are the rules now? You really have to ask their staff! ! (Tianjin)