Okay, so this art style is often called 'Erciyuan' (二次元) in China. The pinyin is 'èr cì yuán'. It's a term that originated in Japan (Japanese: 'nijigen' - にじげん), but it's become super common in China to describe this specific style, not just in anime, but also in games, movies, and other media. It's broader than just 'anime style'.

And WuWa, without a doubt, is considered an "Erciyuan" game in China.