The first is to write a preview report or an experimental report. The first thing is to express clearly. Preview is mainly aimed at the presupposition of experimental principles and operations, which can let us have a preliminary connection with the work to be done; And make a preliminary investigation of some possible mistakes, and then verify your ideas in the process of experiments, which will help you improve your logical analysis ability and help you to carry out your own projects in the future. For example, if the experiment involves crystallization, then you have to think about how to make the crystal grow more perfectly. Do you want to know about crystallography and the shape of other people's crystals (sometimes it is quite powerful at this time). You can also design how to take photos or videos of your results and process, and your report will be more than just dry words.