Novel?
I ship my rival x me (xscene is super short and censored)
Does it need to be Chinese? I know many good novels that fit that catagory but manhuas are usually worse than novels/mangas and manhwas because they lack depth and the mc's and ml's are usually insanely overpowered. Also you say you want nice and simple recommendations but does that mean you want something very light-hearted with predictable plot or survival/ apocalyptic (dark) or something funny and romantic?
Your friend could check this out - https://www.mangago.me/read-manga/he_hasn_t_faded_mgs/
I really recommend this the story is really beautiful and its Shounen Ai.
https://www.mangago.me/read-manga/salad_days_tang_liuzang/
I need a good Chinese bl thats hella deep but kinda short. And it needs censorship so no sex scenes or anything. Im introducing someone to bl and i wanna start with something nice and simple