I don't know where to ask, but I wanted to know, I'm a little confused because I wanted to use Luo (Bai Luo) as a name for a chinese oc but wiki said it's a last name (Free to ignore)

Ohhh? I haven't gotten an ask in a long time, so i'll answer this regardless of not having chinese expertise.

In my opinion Luo is most definitely a last name. We see it used in mdzs with mianmian/Maiden Luo (Luo Qingyang) and svsss with Luo Binghe [i haven't watched/read that one, but i see the name since he's one of the main characters].

Both are examples where the name is being used as a last name. However, i'm not sure if it's offensive or not to use Luo as a first name! In my opinion as long as it's not being put in a physical novel somewhere where it could be a life-long mistake and it's only being used for fun i don't think this is something you really should worry too much about. As long as it's not harming anyone, have fun and name your character how you like.

However, i know there are accounts out there who do focus on answering questions like this but i can't remember their names, so i'm hoping one of those accounts sees this and helps you out. i'm an american who's only been in the fandom for about 5 months max, so my knowledge of the chinese language is about as much as anyone else who's just been exposed to names from china. i have seen accounts that focus on answering technical questions like this one, so let's hope one of them sees it.

Thank you for the ask anon, although i couldn't help too much i really enjoy answering asks even if they're not questions and just a hello.