1. Core journals refer to professional journals with a large amount of professional information and high quality, which can represent the development level of professional disciplines and are valued by readers in this discipline. Core journals are an important part of China's academic evaluation system, which is of great significance for enhancing academic reputation and influence.

2.C periodicals, especially CSSCI (Citation Index of Social Sciences in China) is a core of NTU, which is mainly used to retrieve the essays and literature citations in the social sciences in China. It is a landmark project in the evaluation field of humanities and social sciences in China, and it has a high recognition for researchers in the field of social sciences.