LIMA, PERU — President Joe Biden and Chinese President Xi Jinping reiterated the importance of maintaining dialogue to manage the U.S.-China rivalry, at a summit held Saturday on the sidelines of the Asia-Pacific Economic Cooperation Forum in Lima, Peru. The U.S.-China relationship is the “most important” in the world, Biden said, stressing both leaders’ responsibility not to allow competition to veer into conflict. “These conversations prevent miscalculations,” Biden said of their meetings. “Over the last four years, I think we’ve proven it’s possible to have this relationship,” he said. Xi expressed similar sentiments, saying both countries “should bear in mind