This book studies and comprehends the strategic concept of the Belt and Road and presents China's glorious achievements in the field of diplomacy from five aspects, namely 'build a community of shared future for mankind', 'build new type of international relations taking win-win cooperation as core', 'practice the right view of rightness and benefit', 'lead the reform of global governance system', and 'promote the strategic concept of the Belt and Road'. It focuses on the core of diplomatic thinking of building a community of a shared future for mankind, and explores Chinese solutions to the problems of peace and development in the world today. The book believes that the idea of ​​building a community of a shared future for mankind has a profound strategic vision and distinctive Chinese characteristics. It features a transcendence and innovation of traditional international relations theories. It will definitely have a major impact on the promotion of world peace and development and the progress of human society, building mutual respect, a new type of international relations featuring fairness, justice, and win-win cooperation. It condenses China's basic propositions and positions on international relations and paves the way to a community of human destiny; practicing the correct concept of righteousness and benefit is the value orientation of socialist diplomacy with Chinese characteristics in the new era and establishes the moral foundation for promoting the building of a community of human destiny; leading the change of the global governance system and promoting the construction of "One Belt, One Road" is a major practical innovation of socialist diplomacy with Chinese characteristics and a systematic project for building a community of human destiny.