Chinese President Xi Jinping and his wife Peng Liyuan are welcomed by U.S. Vice President Joe Biden and his wife at Andrews Air Force Base in Washington D.C., the United States, Sept. 24, 2015. Xi arrived here Thursday to meet with his U.S. counterpart Barack Obama and other U.S. political leaders as part of his first state visit to the United States. (Photo: Xinhua/Lan Hongguang)
