Biden and Xi Meet, Delivering Messages Seemingly Intended for Trump

LIMA, Peru — When President Biden and China’s leader, Xi Jinping, met on Saturday in Peru, they spoke directly to each other for perhaps the last time about a fierce superpower rivalry that Mr. Biden has sought to keep from spiraling into open conflict. But both men also seemed to be addressing someone not in the room: Donald J. Trump, who has promised to take a more aggressive approach to Beijing when he becomes president again in January. Mr....