At that time, our teacher said that we should not write proficient ... that's all. But after my personal practice, I found that no matter what you write, you can answer when someone asks you what is mentioned in your resume. Don't say that you are proficient in a certain technology. When people ask you, you say that I don't know much, only know a little, or simply say that I don't know, which is not good. As long as you pass the interview, you don't have to worry about the technology mentioned in your resume. You can't operate it now. Because you enter the company, the old staff will definitely take you.