Wu Chinese is a type of language that some people speak in China. It has special sounds and words that are different from other types of Chinese.
Lots of people live in China, and they all speak different languages. For example, some people in China speak Mandarin Chinese, and others speak Cantonese Chinese.
Wu Chinese is one of those types, and it's special because it has its own way of saying things. It's like having a secret code or secret language that only some people know.
So if you hear someone speaking Wu Chinese, it might sound different from what you're used to, but it's just another way of talking, like how some people have accents when they speak English.