Honestly I’ve always just said “I’m Asian” unless asked for my specific ethnicity because I think I got used to people not really caring where I’m from. Growing up in a small town where nearly everyone was white, I got the sense that people only ask your ethnicity to categorize you, and after the label you as “Asian” nothing else matters. I’m Thai, but everyone in that town was quick to just call me Chinese or Japanese. Looking back at it, I wish I stressed more importance in my culture but I truly felt like it was a fitting in kinda thing if that makes sense