The core journals of Peking University refer to the catalogue of Chinese core journals of Peking University, which is one of the important references for the topic selection of domestic papers. In addition, the domestic paper selection system also includes CSSCI Source Journal of Nanjing University, China Statistical Source Journal of Scientific Papers of China Institute of Science and Technology Information (also known as China Core Journal of Science and Technology), China Core Journal of Humanities and Social Sciences of Chinese Academy of Social Sciences Document Information Center, China Science Citation Database (CSCD) Source Journal of Chinese Academy of Social Sciences Document Information Center and China Humanities and Social Sciences of China Journal of Humanities and Social Sciences.