Of course, there is a word limit for the publication of manuscripts. The number of words required varies according to the level of journals published by the author. Moreover, the requirements of each journal are different, but most journals of the same level require the same number of words, and the difference will not be too great. I hope the author can make good use of every position, and the title should be clear and concise, with as few words as possible. Generally about 200 words or less, this is the main axis of an article, running through the whole article, and it is also necessary to clearly express the main idea and the overall idea of the article. Keywords are beneficial to retrieval. The choice of keywords can be title, abstract, text and so on. Choose words or phrases that can express the ideas and concepts in the paper. Generally, you can get a high-quality publication of 3 to 5 words by understanding the train of thought.