Language is a symbolic system peculiar to human beings and the most important tool of human communication. There are many tools for human communication, such as gestures, semaphores, traffic lights, knocking at the door, etc., but the most important of them is language. Modern Chinese is the language used by modern Chinese people, including the common language and the dialect of modern Chinese. The characteristics of the common language of modern Chinese include: tone, no complex consonants, and vowel predominance. Putonghua or Mandarin Chinese is the common language of modern Chinese people, which takes Beijing pronunciation as the standard sound, northern dialect as the basic dialect, and for which modern vernacular works as the grammar standard. Putonghua pronunciation is based on Beijing pronunciation, which is spoken according to the pronunciation system of Beijing dialect. However, some local pronunciation components should be discarded, and some different pronunciations should also be reviewed. The vocabulary of Putonghua is based on the vocabulary of northern dialects, not all the vocabulary of the north.