This book is about the origin, development, background, and influence of the relationship between church and state  in the contexts of Chinese societies like China, Taiwan and Hong Kong. Theses interdisciplinary studies, on one hand, investigate religion policies themselves and their impact on freedom of religious belief. On the other hand, the book also analyzes and discusses how nationalism in Chinese societies responds to such modern challenges from theologies, organizations, politics, and practices of Chinese Buddhism, Taoism, Christianity, Islamism, and some other folk religions. This book has offered another brand new perspective to examine how Chinese religions and nationalism interact with each other in the field of Chinese religion and brought us to another upper level to see its beauty of interaction.