You have to wonder that if china wasnt so strict with the censorship, would they have better art than manhwa pornhwa and manga? It might have been the reason why their art quality is rarely great. But this does make those great ones more precious.
I've certainly seen better art from them but for some reason they always have a consistency problem.
On top of that, even if the art is top notch, the plot is so cliche that you'd find several hundreds with the same.
Manhua's even if they have a decent plot usually lack substance, plot and character wise both. Add to that the abysmal translations since the translators only want to pump out chapters to the max, you get trash. Leading to really low popularity and hence the cycle repeats.
Korean manhwas on the other hand, I find very well written, I'm a sucker for
character interactions and growth and I find manhwa's and korean novels to be very good at that aspect, on top with consistent art(mostly, i've seen very upsetting artist changes).
Light Novels and their manga adaptions are also really good at writing character relations and making you feel the turmoil the characters are going through, though I find that they get updated too slowly 😔.
There are some really great old CN's though but can't say anything about the present since I'm not updated on the current CN trend and writings.