Man is a gregarious animal, and no one can live alone in this world. No matter how lofty and aloof a person is, it is also inseparable from the services provided by others.

Without farmers, clothes, workers, education, teachers, superiors and colleagues, we can't eat.

Everyone who owes others should be grateful and give back the help from others to the society.

All for one and one for all. This is a virtuous circle. Everyone accepts goodwill, helps others and releases goodwill. Others will feel your kindness and give it back to you. Therefore, altruism is the best self-interest

There is also a gross profit that is not done. They are alone, and everyone looks askance.