So true. This is what people don’t seem to get.

Agreed. It’s one thing to THINK you’ve only got one option, it’s another to do your research. If she’d done any research at all, we wouldn’t be having this discussion.

No matter where it is now, Chang started in China. It is a variant of Zhang. In Korean, it is merely one of three derivatives of the original Chinese word. Not to say that a Korean person couldn’t have the surname Chang - it’s just less likely. Jang and Zang being the other two.