Who invented Cantonese, a traditional Cantonese dialect?

Generally speaking, it is the language that the residents of the Central Plains fled to Lingnan, which was still a wild place at that time, and mixed with the Vietnamese living here. Therefore, in modern Cantonese, you can clearly see the traces of ancient Chinese. For example, Cantonese people say "nothing" means "nothing", and he (she) means "you", "frugality" and so on. These are the usages of ancient Chinese ("frugality" originally meant to be stingy, but later it was extended to mean frugality. For example, money refers to coins of poor quality in the Song Dynasty. Modern cantonese means saving money. As for whether Cantonese is a language or a dialect, many parties have a heated debate. I personally support the view that Cantonese is a language rather than a dialect. As a non-linguist, I can't give conclusive evidence here to prove that Cantonese is a language. Moreover, I think the academic circles may not have a very accurate standard for the specific division of language and dialect. I just rely on my personal feelings to prove that Cantonese is a language, not a dialect.