1, SCI articles are sci (scientific index,; ), sci articles can be regarded as the top articles in international academic circles, and sci articles can represent the first technology and development trend of this major in the world, so sci articles are highly recognized in academic circles. Therefore, for many authors, SCI articles are the highest recognition of their academic level. More and more scientific research units and doctoral students in China attach great importance to the publication of SCI articles, but even these people are afraid of the publication of SCI articles, let alone most ordinary authors.

2.sci is a citation database created and published by institute for scientific information (ISI) 196 1+0. 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, among which SCI is the most important.