President Joe Biden greets China's President President Xi Jinping at the Filoli Estate in Woodside, Calif., Wednesday, Nov, 15, 2023, on the sidelines of the Asia-Pacific Economic Cooperative conference. (Doug Mills/The New York Times via AP, Pool) TAIPEI – Perhaps just shaking hands and sitting down together can be enough sometimes. At their four-hour meeting Wednesday, U.S. President Joe Biden and his Chinese counterpart Xi Jinping didn't resolve any of the vital geopolitical issues dividing the world's two largest economies and chief rivals for global influence, but they struck a conciliatory tone that came as a relief to other countries,…