"Have you eaten?" This is a common expression that Chinese people use to greet each other before and after eating. Once, a foreign student who had just arrived in China stammered in Chinese.

(1) The reason is that Chinese and foreign people live in different cultural backgrounds and there are differences in language.

(2) This difference will lead to different ways of treating others.

(3) The correct attitude is communication, respecting both the value of one's own national culture and the value of other national cultures, advocating equal exchanges and mutual learning.