According to the website of the Chinese Embassy in the United States on August 20, at the invitation of Allen, President of the Brookings Institution, Ambassador Cui Tiankai held a video exchange with more than 20 scholars and relevant people on Sino US relations on August 13. Ambassador Cui delivered a keynote speech with the following parts: < / P > < p > China has always been an active participant, supporter and contributor to the international system. At the same time, as a big country with ancient civilization, China’s integration into the international system will inevitably bring about some changes, and the international system should also be adjusted accordingly. It’s as natural and reasonable as a chemical reaction. However, China has no intention of “revolutionizing” the existing international system or creating a new system of its own, but hopes to actively promote the corresponding reform according to the changes of the situation while integrating and adapting. Is the United States willing to work together with China and other countries to ensure that the international order and global system meet the needs of all Member States of the international community and work hand in hand to cope with various risks and challenges; or is the us willing to let the situation get out of control, indulge in the zero sum game of big power competition and fall into the Thucydides trap? The United States must make a fundamental choice. The construction of a post epidemic world provides a rare opportunity for Sino US cooperation. It will be a very different world. Technological progress and other factors will lead to profound adjustment of the international economic structure and supply chain. The economic guiding ideology will also change, and the attention to social problems such as public health and how to deal with the spread of infectious diseases will increase. Under the new situation, the international community should strengthen the coordination of macroeconomic policies and reform the global governance system, especially in social fields such as public health. In the face of important tasks and severe challenges, China and the United States should make the right choice. On the basis of mutual understanding and respect, China and the United States should not only play a positive role in building a new global governance system and international order in a “post epidemic world”, but also develop more stable, forward-looking and stronger Sino US relations.