Idiom is a part of stereotyped phrases or short sentences in China's Chinese vocabulary. Idiom is a major feature of China traditional culture, which has a fixed structure and fixed sentences and has certain significance. It is used as a whole in a sentence. A large part of idioms are passed down from ancient times, and the words used are often different from those used in modern Chinese. They represent a story or an allusion. Some idioms are just a miniature sentence. Idiom is a ready-made word, similar to idioms and proverbs, but slightly different. Idioms are a bright pearl in China culture.