Although tensions remained high between China and the U.S. for most of 2021, things improved in November with a virtual meeting between top leaders. How should the two countries work together to address common challenges such as coronavirus, inflation and climate change, and prevent competition from veering into conflict? CGTN's Guan Xin invites A. Michael Spence, a Nobel laureate in economics, and Justin Yifu Lin, dean of the Institute of New Structural Economics at Peking University, to recap the tumultuous year for the world's two largest economies.