The meaning of "people who indulge in lust are shallow in nature, while those who indulge in lust are deep in nature": if a person deeply indulges in lust and greed, he will lose the spirituality and wisdom of life and miss many good opportunities and blessings in life. If a person is indifferent to fame and fortune, his spirituality and wisdom in life will be richer and he will get many good opportunities and blessings in life.

People who indulge in lust are shallow. This language comes from "The Master of Zhuangzi". The original text is: "People who indulge in lust are shallow." It was first seen in Zeng Guofan's "On Ice remonstration".

The so-called greedy person refers to a person whose desire is too high and who is trapped in the ocean of desire. So what is a "secret"? It is human wisdom and spirituality, and it also extends to human opportunities and blessings.