There's nothing inherently poor about the production/animation quality of Chinese animations (donghua). The animation/art can be just as good as
most anime. In fact, a lot of high-quality animes outsource much of their production to Chinese animation studios.
The real problem with donghua (IMHO) is the stories. Ugh. Even when a donghua is about someone getting reincarnated in another world (like a Japanese isekai) it's all the same old stuff about spirits, martial arts, and cultivation (aka xianxia). So rather than answer the question, "what if?" the Chinese isekai equivalent is more like, "what if we told the same old story but changed the scenery?"
It annoys me for the same reason that certain scifi/fantasy shows/movies annoy me: They're just drama, "in space" or drama, "in the future" or drama, "in another world" with basically zero plot elements relating to the differences in technology, science, magic, etc. No one is exploring the possibilities or problems that certain differences could entail.
They're not even weird! Which is another common appealing point of anime--even when the basic plot is the same as many other shows (e.g. "the hero has a shield permanently stuck to their arm that they can't remove? haha; what‽").
As soon as I see that cultivation is a major element of the show it's akin to watching an anime and being like, "Oh a demon lord? How creative." =)