International relations (IR) is both a science and an art, i.e. the unity of object and subject. Traditional international relations theories (IRT) have probed the laws of IR, in an attempt to become the universal science. IRT have developed into a class doctrine that defends the legitimacy of the western international system as a result of proceeding from the reality of IR, while neglecting its evolving process, and overlooking the meaning of art and the presence of multi-international systems. In other words, IRT have turned into what Karl Marx might have deemed as the vulgar international relations theories (VIRT). For this reason, we declare the end of international relations theories. This phenomenon can only be negated by the so-called Chinese School, which will set the sustainable and harmonious relations among nations, between state and non-state actors, and within states and non-state actors (in one word ‘global-society’) in five life-forces of economy, politics, military, culture, and religion. Consequently, this will bring about a real regression of nationality and compatible development of various international systems.