This is what the information retrieval teacher said. Hehe, what she taught us is to enter the electronic library such as Superstar Duxiu through the right side of our school library website. The mirror image was bought by our school and shared by other schools. Of course, there are electronic resources such as periodicals, and then you will be prompted to download a caj or pdf reader, and then download the books you want to read to the reader to copy. That's about it. I hope it helps you.