1. Famous aphorisms refer to the conclusions or suggestions made by some celebrities or ordinary people, written in history, and obtained through practice, as well as the famous words of warning. Famous aphorisms are easy to pass on and are the essence of concentration.

2. Motto is the essence of one person's wit, and the wisdom of many people. Motto requires positive content, which can be the wisdom of smart people and the experience of the elderly. Motto can be used as a concise statement of people's behavior norms. From the perspective of syntactic structure, aphorisms are relatively complete and independent sentences, which can be used to express ideas independently.

3. Proverbs are a kind of idioms. It is a relatively concise and concise discourse circulating among the people. Most of them reflect the practical experience of working people, and they are generally handed down orally. It is mostly colloquial short sentences or rhymes that are easy to understand.

4. Two-part allegorical saying is a special language form created by China people in their life practice, and it is a short, funny and vivid sentence. It consists of two parts: the former part plays the role of "introduction", like a riddle, and the latter part plays the role of "back lining", like a riddle, which is very natural and appropriate. In a certain language environment, it is usually said that the first half, "rest" to the second half, you can understand and guess its original intention, so it is called two-part allegorical saying.