<p>In the context of great power competition, the international order is undergoing profound transformation, with changes in the behavior of the hegemonic power, the United States, being the core factor driving the transition of the liberal international order. The liberal international order dominated by the United States after the Cold War provided stability and predictability through international institutions and rules. Changes in U.S. behavior have led to the reconfiguration of inter-state relations, affecting the efficiency of the international institutional and rule systems, and causing dramatic psychological shocks in the international community. In the changing international environment, the liberal international order faces a dual crisis of legitimacy and effectiveness, with its influence significantly weakened, undergoing a process of partial deconstruction. The construction of a new order will be achieved through peaceful competition and institutional reshaping, with long-term coexistence and power sharing between China and the United States becoming key variables.</p>