This wonderful book of strategies for political strategists is a training manual for the "inner saint and outer king" of ancient wise men. The whole book is divided into two volumes: "Ben Jing" and "Yin Fu", with seven chapters that progress layer by layer: "Ben Jing" specializes in strategies for entering the world, from the method of identifying talents, strategies to control subordinates, to the tactics of persuading princes, every sentence directly points to the people's hearts; "Yin Fu" focuses on cultivating the mind and tempering, teaching how to cultivate the mind, discern laws, and achieve inner calmness and external understanding. Its text is ancient but contains hidden mysteries. It can not only provide emperors and generals with strategies to govern the country and control their ministers, but also bring wisdom to ordinary people. It is the core classic on the art of vertical and horizontal movements during the Warring States Period, and it is also the source of wisdom for later generations of military strategists, legalists and even merchants.