Pictures are an important part of SCI papers, which can directly express data or ideas. Peer editors also pay great attention to the review of charts in the process of reviewing manuscripts, and sometimes they are even called back for revision many times. Therefore, it is very important for everyone to learn high-quality drawing in the process of writing papers. To make high-quality pictures, the most basic thing is to carefully read the submission guide of your own submission journals. Generally, there will be a special part to seek pictures. This small series will introduce the basic knowledge of pictures and help you read the submission guide better and make excellent pictures.