Story of time 

Human nature is the nature engraved in genes, which has not changed for thousands of years. When you master the code of human nature, you also master the code of career, love and family affection. Only then can you make preparations in advance before the fickleness of human nature, and even let the people and beautiful things around you continue to exist. Only by understanding human nature can you grasp the most essential things between people, so that you will always know clearly where you are at the moment, what chips you need in your hand, and how to act soon. Understanding human nature is not to see how cold the world is. This world is very beautiful. Only those who do not understand human nature feel hurt and feel that the world is not beautiful.