Is pronunciation related to vocabulary and meaning? Take Chinese as an example, thank you

There is no necessary connection between the phonetic form and semantic content of language symbols, and their combination is completely established by society. For example, in Mandarin, why is it unreasonable to combine /shu/ with "woody plants"? Xunzi said two thousand years ago: "A name is not fixed, but based on life. If it is customary, it is appropriate. If it is different from the contract, it is not appropriate. "

The arbitrariness of the combination of sound and meaning is an important reason for the diversity of human languages, such as "dog" in English, /dog/ and /gou/ in Chinese.

If there is a connection, it is estimated that there are only a few onomatopoeia words, such as a dog barking "Wang" and exclaiming "Ah".