How are dialects formed? Why are the dialects in various regions of China so different?

The formation of dialects has a lot to do with immigration and racial integration. In fact, all contemporary Chinese dialects were greatly influenced by ancient Chinese during the Western Zhou Dynasty. This is why the various Chinese dialects with very different pronunciations and even inability to communicate with each other are collectively called Chinese. In fact, the grammatical rules of various Chinese dialects are also highly similar. There are also some areas in Han Chinese areas that have been less affected by modern Central Plains languages ??and have preserved the characteristics of ancient Chinese relatively intact. For example, the Hakka language used by the Hakka group and the Cantonese spoken by most Cantonese people have preserved more of the Central Plains Chinese in the Tang Dynasty than the majority Chinese. . The Min language has retained a large part of ancient Chinese. In addition, according to the nature of dialects, they can be divided into regional dialects and social dialects. From the classification, we can review the reasons for the formation of dialects: first, the variations of language due to regional differences, which is an intuitive reflection of the uneven development of language in the region; The second is the different social variants formed by social differences among social members in the same region in terms of occupation, class, cultural education, age and gender. Judging from the major categories of dialects of modern spoken Chinese - Mandarin, Wu, Hakka, Min, Cantonese, Xiang, and Gan, it is generally difficult for outsiders to understand the spoken languages ??in different regions as phonetic characters; in addition, in China There is also a saying in the south that "there are ten different accents in ten miles". In Zhejiang and Fujian, there are even dozens of different accents in one county. Cultures such as dialects have formed great differences in pronunciation, grammar, vocabulary, etc., and a lot of fellow villagers' friendships have also established an initial sense of identity through dialects. I have had a rough experience with dialects. When I was in college, my roommates were from Chongqing, Jiangxi and Hunan. When they called home, they heard completely encrypted content. It took me four years to listen to it. (The research content comes from Wikipedia and Interactive Encyclopedia)

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