Bali, which is like summer all the year round, bears witness to China's role as a major country in promoting world economic recovery and leading global development in the new era. This is the first time that China's top leaders have attended a multilateral summit since the victory of the 20th CPC National Congress. Standing at the forefront of the times, the declaration of "jointly meeting the challenges of the times" gathers consensus; The call to "build a better future together" is inspiring. Major country diplomacy with Chinese characteristics has opened a new chapter in the turbulent times and injected confidence and strength into building a better world. China's wisdom insight into the trend of the times "The world is facing many important challenges related to future development, and we hope the G20 will carry forward the spirit of solidarity and seek ways to address common challenges." On the occasion of the 17th G20 Summit, UN Secretary General Guterres said so. In the face of many global challenges, the G20 Leaders' Summit with the theme of "common recovery and strong recovery" places expectations on all countries. It is expected that this summit will build consensus, promote major economies to strengthen macroeconomic policy coordination, and make a voice of adhering to multilateralism, openness, inclusiveness, and mutually beneficial cooperation; It is also expected that China will continue to play an active role in the G20 and contribute wisdom to solving the global development dilemma and promoting economic globalization towards a more open, inclusive, inclusive, balanced and win-win direction. What are the characteristics of the great changes the world has not seen in a century? The COVID-19 has been delayed repeatedly, the world economy has become more vulnerable, the geopolitical situation has become tense, global governance has been seriously lacking, and multiple crises such as food and energy have overlapped. Human development is facing major challenges. Where is the world at the crossroads? How can the G20 play its due role? "Those who observe trends are wise, and those who follow trends are wise." Throughout history, mankind has grown up in overcoming trials and crises. As long as we advance in the logic of historical progress and develop in the trend of the times, we can cultivate new opportunities in the crisis, open up new situations in the changing situation, and unite to overcome