Let the Light of Opening-up Shine the Way Forward of Mankind Ⅰ.History as a Mirror Ⅱ.Questions of the Times Ⅲ.Development Trends of the World Ⅳ.China's Path Chapter Ⅰ World Openness Index: Concept and Theories Ⅰ.C oncepts of Openness Ⅱ.Theory of Opening-up to the Outside World Ⅲ.Opening-up Practices in Foreign Trade and Investment Ⅳ.A Framework on Opening-up Model of National Economy Chapter Ⅱ World Openness Index: Methodology Ⅰ.Principles of Measuring Opening-up to the Outside World Ⅱ.Indicators Measuring Opening-up to the Outside World Ⅲ.Basic Indicator Data Processing and Weight Setting Chapter III World Openness Index: Results and Analysis Ⅰ.World Openness Ranking. Ⅱ.Openness Analysis. Ⅲ.Optimal Level of Openness. Ⅳ.Main Conclusions. Chapter Ⅳ Economic Globalization and the Megatrend of Global Openness Ⅰ.Development of Economic Globalization Ⅱ.Increasing Resistance to Economic Globalization Ⅲ.Momentum of Economic Globalization Remains Ⅳ.New Economic Globalization Trends against the Backdrop of Novel Coronavirus Pandemic Chapter Ⅴ WTO and Global Economic Governance Ⅰ.WTO as Important Pillar of Global Economic Governance Ⅱ.Regional Economic and Trade Arrangements Represented by Free Trade Areas on the Rise Ⅲ.New Trends Evolving from Global Economic Governance Chapter Ⅵ Cooperation in Global Trade and Investment Opening-up Ⅰ.Opening-up Practices in International Trade Ⅱ.Opening-up Practices in International Investment Ⅲ.Achievements of Trade and Investment Opening-up Cooperation Ⅳ.New Progress in Promoting Trade and Investment Opening-up under the New Situation Chapter Ⅶ History and Great Achievements of China's Opening-up Ⅰ.China's Road of Opening-up and Development Ⅱ.Achievements and Contributions of China's Opening-up Ⅲ.Experiences and Lessons of China's Opening-up Development Ⅳ Prospect of Promoting High-level Opening-up to the Outside World Chapter Ⅷ Fostering a New Development Paradigm through High-Level Opening-up Ⅰ.New Development Paradigm Set to Be the Choice in the New Development Phase Ⅱ.Expanding Domestic Consumption to Foster A Powerful Domestic Market Ⅲ.Promoting An Internal-External Virtuous Cycle to Push Forward High-Quality Development Ⅳ.Always Adhering to Reform and Opening-up as A Strong Driving Force Chapter Ⅸ Pilot Free Trade Zone and Free Trade Port Mark New Heights of Reform and Opening-up Ⅰ.Active Exploration of Opening-up to the Outside World in the New Era, Ⅱ.New Results of First Trials in Reform and Opening-up Ⅲ.Prospects of Development of Free Trade Zones and Ports …… Chapter Ⅹ China's Practice of Participating in Multilateral and Regional Economic and Trade Cooperation Chapter Ⅺ China International Import Expo Serving as International Public Goods in Openness Cooperation Chapter Ⅻ BRI is the China Plan for Jointly Building a Community with a Shared Future for Mankind Global Openness Prospect Appendix