Hello, because the primary school library needs to protect the school books in strict accordance with the preservation methods in order to better provide a reading condition for later students.

There are many ways to save books, the most important of which are as follows:

1. Books need to be kept in a dry environment, and taking off shoes and socks can reduce the presence of water in the environment where books are located.

2. Books need to be protected from insects. If you don't take off your shoes and socks, it may bring some germs and bacteria, which will easily breed pests.

3. Books also need pollution prevention, because if students put their shoes and socks in the library, books may be polluted if they accidentally fall to the ground.

To sum up, these special requirements of teachers for students are actually to better protect books. I hope students can understand the teacher's original intention and create a better reading environment.