I have been reading the English translations and the characters and especially their dialogues feel very fake. I do appreciate the hard science aspect of the books but the long monologues, kids speaking like middle-aged philosophers, and army personnel being one-dimensional macho men breaks the immersion for me. It has the depth of a 1980s low-budget thriller.
I don’t read a lot of hard science fiction or translations of Chinese books. I don’t know if this is genre-related.
Well as a translator myself, I can say translating and writing are VERY different skillsets! Entirely possible for someone to be good at writing in English but mediocre at translating to it (I am one such example 😔).
But yes, it seems likely the different styles and SF-hardness is more to blame than the translation itself.