It is most difficult to determine the difference amongst Chinese and Korean girls at times. There have been incidents, which I mistakenly assume a Chinese girl was Korean and, a Korean girl was Chinese.
My friend who is Chinese says the physical difference amongst Japanese, Chinese & Korean girls is their eyes. I’ve had good results determining Japanese from Chinese in addition to Korean. However, the shapes of the eyes in Chinese versus Korean are most difficult to decipher.
Are there any personality traits that are significant enough to determine a Chinese girl from a Korean girl when chatting?