What is the main content of the book "Thick Black Study" and what effect does it have on people?

" Thick Black Study " was a political theory book written by a famous politician in Korean history, Park Chung-hee. This book mainly talked about a kind of interpersonal relationship theory, which advocated that people should "shamelessly" pursue their own interests, but at the same time, they should also show their "black face selflessness". This method of balancing relationships was very effective for politicians and ordinary people. For politicians,"Thick Black Study" advocated that politicians should have the spirit of "shamelessness", that is, in order to achieve their own goals, they should not hesitate to sacrifice the interests of others, but at the same time, they should also have a "black face selflessness" side. They should not violate national interests and moral standards only for personal interests. This method of balancing relationships could help politicians gain more benefits in their political career, and at the same time, they could also establish good interpersonal relationships to lay a solid foundation for their political career. For ordinary people, Thick Black Study also had a certain enlightening effect. In our daily lives, we will encounter all kinds of difficulties and challenges. Sometimes, we need to show the "shameless" spirit to pursue our own interests by hook or by crook, but at the same time, we have to show the "black face selfless" side. We can't harm the interests of others for our own interests. This method of balancing relationships can help us better cope with the various challenges in life and improve our competitiveness and quality of life.