Why are China people a little irrational when it comes to South Korea and Japan? (Maybe some people)

Tell me that we are irrational because they are richer than us? The person who said this is a hahahari. I am not irrational to hear about Korea and Japan, but disgusted, not for historical reasons, nor for economic reasons that some brain-disabled children think. But because these two countries are really deceiving others. As we all know, the Japanese are extremely xenophobic and never take China people seriously, so I'm too lazy to elaborate. Koreans are more disgusting than Japanese. On the one hand, they totally exclude China people; On the other hand, they plagiarized the culture of China. For a person who looks down on you, will you be kind to them? By the same token, will you be kind to a country that doesn't take you seriously and extremely rejects you? Only those who ha ha ha Japan have the face to praise Japan and South Korea.