Are you talking about the materials copied by the National People's Congress? The materials copied by the National People's Congress are publications with fixed serial numbers, which are divided into many disciplines, and each discipline is a monthly magazine. It is to re-compile valuable documents related to various fields into a book for publication, and the articles in it are reprinted from various academic journals. Compilation is also a science, which requires high academic accomplishment. Copying materials are the essence of various periodical publications, and articles that can be copied through copying materials have good academic value.