The world is in a period of major development, major changes and major adjustments. Peace and development remain the themes of the times. The global multi-polarization, economic globalization, social informatization, and cultural diversification are developing in depth. The global governance system and the reform of the international order are accelerating. The interconnection and interdependence of countries are deepening. The balance of international power is becoming more balanced. The trend of peaceful development is irreversible. At the same time, the instability and uncertainty faced by the world is outstanding, the world ’s economic growth momentum is insufficient, the polarization between the rich and the poor is becoming more and more serious, regional hotspot issues are emerging, and non-traditional security threats such as terrorism, cybersecurity, major infectious diseases, and climate change continue to spread. Humanity faces many common challenges. The text next talks about? ['Why do we think that the current world is in an era of development and radical change.', 'China is an important force for maintaining world peace and promoting common development of the world.', 'Correctly understand and grasp the theme of the times is the basis for countries to formulate policies.', 'People of all countries should work together to meet the various risks and challenges we face.']