When President Joe Biden meets for the final time Saturday with his Chinese counterpart Xi Jinping, his aides say the moment will be ripe for reflection on a relationship that began more than a decade ago,

The two leaders will meet in Peru, where China has steadily expanded its influence in a challenge to the United States in its own region.

Joe Biden meets Chinese president Xi Jinping for the last time as U.S. president on Saturday, but the leaders' goal of lowering tensions before Donald Trump's inauguration is challenged by fresh conflicts over cyber crime,