Peking University professor Hu Shi said: The greatest evil of human nature is to hate you for having something, to laugh at you for having nothing, to disdain you for being poor, and to fear you for being rich. When people in our country meet for the first time, they evaluate each other's status and worth, and then choose whether to kneel to the other person or to make the other person kneel to them.

This is true in any industry; in fact, because your strength does not benefit others, most people, apart from jealousy, will not learn from you, nor will they respect those who are superior. This is a weakness and distortion of human nature. Some people are like QR codes; if you don't scan them, you really don't know what they are!