Chinese Vice President Xi Jinping and his U.S. counterpart, Vice President Joseph R. Biden, display T-shirts given to them by students at the International Studies Learning Center in South Gate, Calif., on Feb. 17. Mr. Xi is expected to take over as head of the ruling Communist Party in November, before becoming president in 2013. Below are the dusty remnants of an abandoned cave dwelling where Mr. Xi lived during part of his youth, when he was sent to learn Mao-era peasant virtues. (The Associated Press)

Chinese Vice President Xi Jinping and his U.S. counterpart, Vice President Joseph R. Biden, display T-shirts given to them by students at the International Studies Learning Center in South Gate, Calif., on Feb. 17. Mr. Xi is expected to take over as head of the ruling Communist Party in November, before becoming president in 2013. Below are the dusty remnants of an abandoned cave dwelling where Mr. Xi lived during part of his youth, when he was sent to learn Mao-era peasant virtues. (The Associated Press)