Not really. One guy from HK that I worked with was always ticked off when traveling when Japanese would come up to him to ask questions in Japanese. He was born at least 20 years after Nanking, and it was ingrained in him to still hate/detest Japan.
For fun, there's at least one youtube vid of (three?) Asians trying to informally ID ethnicity from head shots of Asians.
When I was in Vietnam there were Yanks who claimed they could tell a north Vietnamese from a southerner, a Cambodian from a Thai, a Chinese from a Korean, etc. All pure hokum.
Then there was a `friend/foe recognition guide’ which showed the same bucktoothed Oriental in a conical hat but with six different captions:
Friendly Vietnamese peasant
Hardcore Viet Cong
Neutral Cambodian
Ethnic Chinese local
North Vietnamese officer
Your local PX manager
I said “their”, not some other guy’s.