Research on China's Strategy and Policy in Northeast Asia offers a comprehensive, in-depth, and systematic analysis of China's strategy and policy in Northeast Asia. It examines the region's political, economic, security-related, and cultural dynamics, with a focus on key issues and territorial sovereignty disputes. The research integrates theoretical, applied, strategic, and policy-based research methods, to provide a multifaceted perspective. The analysis is framed through the lens of major-country diplomacy with Chinese characteristics and China's foreign policy towards Northeast Asia.This book explores China's strategic vision for Northeast Asia, emphasizing the evolving international system in the region and China's strategic responses. It argues for the establishment of a new order of international relations in Northeast Asia, characterized by equality, mutual trust, good-neighborliness, and cooperation. Additionally, the book addresses three fundamental issues: security threats and the development of security mechanisms, energy security challenges and energy system development, and the enhancement of trade, investment facilitation, and regional economic cooperation.This book is an engaging read for scholars specializing in political, economic, security, and cultural research on Northeast Asia, as well as policymakers and strategists focused on China's foreign policy and diplomatic efforts in the region.