1, with different scope of application. There are seven core periodicals in China. The core journals of Peking University and Nantah are two commonly used types of core journals, and sci is an international retrieval tool.

2. The requirements for writing papers are different. SCI papers are required to be written in English, but core journals do not have such a rigid requirement, and both of them require higher content quality of SCI papers.

SCI is a citation database established at 1957 by Eugene Garfield0 in institute for scientific information, Philadelphia, USA. SCI (Science Citation Index), EI (Engineering Index) and ISTP (Science and Technology Conference Index) are three world-famous retrieval systems for scientific documents, which are internationally recognized as the main retrieval tools for scientific statistics and scientific evaluation.

In February 2020, the Ministry of Education and the Ministry of Science and Technology issued "Several Opinions on Standardizing the Use of Relevant Indicators of SCI Papers in Colleges and Universities and Establishing Correct Evaluation Orientation". This document should break the "SCI supremacy" of papers, take this as a breakthrough, take practical measures with strong pertinence and operability, break the "paper-only theory" and establish a correct evaluation orientation.