Zhao is a professor and member of the Chinese Academy of Social Sciences and a senior fellow of Peking University Berggruen Research Institute. His theory of the Tianxia System (All-Under-Heaven), a theory of world order, tries to transcend Huntington’s “clashes of civilizations,” and advances an alternative to the Kantian conception of perpetual peace. He has published many books including The Tianxia System: Reimaging Visions of Global Order from the Past and for the Future, and The Whirlpool that Produced China: Stag Hunting on the Central Plains of China.