Homonyms in modern Chinese are homonyms in narrow sense, which have experienced the evolution from ancient times to the present. The Spring and Autumn Period was called "Yayan"; Han dynasty is called "lingua franca"; Known as "Mandarin" in Ming Dynasty; After the revolution of 1911, it was called "national language"; After the founding of New China, it was called "Putonghua". Mandarin, that is, modern Chinese, is formed on the basis of mature written and spoken language. As for written language, as early as the pre-Qin period, the same written language as the Han language appeared, and this language is still developing. Classical Chinese can't change with spoken language, so it gradually separated from spoken language. By the end of the Tang Dynasty, a kind of written language close to spoken language-vernacular Chinese appeared. After continuous development, many influential works have appeared: Tang Bianwen, Song Quotations, Song and Yuan Plays, Yuan Qu Zaju, Ming and Qing novels, etc. In terms of spoken language, modern Chinese homophones are formed on the basis of northern dialects. It goes without saying that Beijing has played a central role in politics, economy, culture and military affairs. The influence of Beijing dialect is very great and its status is becoming more and more important. At the same time, vernacular literature works are generally written in northern dialects, so the spread of these works has also accelerated the promotion of northern dialects. During the May 4th Movement, the "Vernacular Movement" and "Mandarin Movement" were advocated. The "vernacular movement" completely shook the dominant position of classical Chinese, creating conditions for vernacular Chinese to eventually replace classical Chinese in writing; The "Mandarin Movement" endowed the northern dialect with the northern dialect as the center with the status of national homonym in spoken language. These two movements promoted each other, making the written language close to the spoken language and making the spoken language obviously standardized, thus forming modern Chinese, namely Putonghua. Taiwan Province province is called "national language", and Singapore and other places are called "Chinese". After the founding of People's Republic of China (PRC), national unity and national unity made it increasingly urgent to standardize national languages. Therefore, China Academy of Sciences held an academic conference on standardization of modern Chinese in 1955, and formally decided to call modern Chinese homonyms Putonghua, and vigorously promoted it throughout the country. Therefore, modern Chinese was not invented by anyone, it is the inevitable result of historical development to this day. It can also be said that it was invented by us in China.