President Joe Biden and his Chinese counterpart, Xi Jinping, closed the book on their diplomatic relationship Saturday, meeting for a final time amid uncertainty over what the next Donald Trump presidency might portend for their two countries’ ties.

China’s leader Xi Jinping met for the last time with U.S. President Joe Biden on Saturday but was already looking ahead to President-elect Donald Trump and his “America first” policies, saying Beijing “is ready to work with a new U.

Donald Trump has made a tougher stance toward China central to his pitch on foreign policy, even as Joe Biden and Xi Jinping sought to lower tensions before the next president takes office.