2. The article should be full of life breath, and the viewpoints and materials should be novel. Writing language should be straightforward, simple and vivid, avoid difficult and obscure language or concepts, conform to the reading habits of readers without medical background, and facilitate the digestion and absorption of knowledge. The theme of the article should be focused, one topic and one discussion. It is not advisable to make a long speech, try to avoid big and comprehensive topics and concentrate on writing a question thoroughly and vividly. We should combine things with truth and unify views and materials. It is advisable to submit a manuscript within 2000 words.