To rozoznanie ti neverim. Od zlutaskov viem, ze oni sa medzi sebou (vraj) rozoznaju a im prpadaju nase tvare ako uplne rovnake, ale..

My wife is ethnically Chinese with no non-Chinese blood in her family's recorded history (mom's family from Sichuan, dad's from Zhejiang) but she was constantly being mistaken for Japanese when we were traveling around Japan earlier this year.
This despite not dressing anything like the locals and having a noticeably different posture. And it wasn't just that she was being mistaken for a Japanese-speaking foreigner; we had people say straight up, "Oh, sorry, I thought you were Japanese.
Not only that, when we were in Thailand, several locals thought she was Thai. When we were in Cambodia, some people there thought she was Khmer. In Vietnam she was taken for Vietnamese frequently. Basically everywhere we've gone in East Asia, people have looked at her and assumed she was one of theirs. Not everyone or even the majority of people, but enough to convince me that nationality is not always as blindingly obvious to all Asians as some people claim.