Dr. Qingfei Yin, an Assistant Professor of International History at LSE, delves into the intricate history of Sino-Vietnamese relations and the significance of borderlands. She discusses her upcoming book, which unveils how Cold War dynamics influenced state-building and regional interactions. The conversation highlights grassroots perspectives, the complexities of collaboration and competition, and the evolving nature of borders in East Asia. Dr. Yin also critiques traditional narratives, emphasizing the importance of peripheral nations in global historical contexts.