China's guiding principle for foreign relations and its focus on states and regions has shifted a lot from the first 30 years of the founding of the People's Republic of China (PRC) in 1949, to 1978 and beyond, after reform and opening-up. However, PRC's diplomatic practice has been continuous, whether it was participation in the Korean War, breaking up with the former Soviet Union after a honeymoon period, China's self defense war over Sino-Indian border, participation in the Vietnam War, breakthrough in the Sino-US relation, or PRC's self defense war over the Sino-Vietnamese border. These historical events brought the need for theoretical study in International Politics (IP). The development of China's IP research was slow and filled with complications, but it signified a breakthrough from scratch. This book has filled gap by depicting a complete scroll of China's IP research in over 60 years since 1949. This book has followed two principles: one is according to the classification of the IP discipline and the other is to recommend adaptations according to China's actual conditions.