Politics is ultimately a game between people; it is both the art of struggle and the science of governance. The core of this game revolves around two things: power and interests. Power is the ability to dominate others, while interests are the incentives that drive behavior. Those who hold power maintain order through the distribution of interests, and the method of distribution determines the logic of social operation. This distribution is not arbitrary; it requires a clear set of rules, which is policy. Policies are like instruction manuals, telling participants what they can do, what they cannot do, what rewards come from doing well, and what penalties come from doing poorly. For policies to truly take effect, it is essential to master the balanced use of four key tools. Force is the last resort, currency is the invisible baton, law provides the clear rules of the game, and public opinion shapes thought. These four tools each have their own roles, yet they support each other, together maintaining the dynamic balance of the political system.