Chinese State Councilor and Defense Minister Chang Wanquan (R) shakes hands with U.S. Secretary of Defense Chuck Hagel during their meeting in the Pentagon in Washington D.C. , the United States, on Aug. 19, 2013. (Xinhua/Zhang Jun)

Chinese State Councilor and Defense Minister Chang Wanquan (3rd, L) meets with U.S. Secretary of Defense Chuck Hagel (3rd, R) in the Pentagon in Washington D.C. , the United States, on Aug. 19, 2013. (Xinhua/Zhang Jun)

Chinese State Councilor and Defense Minister Chang Wanquan (R) is welcomed by U.S. Secretary of Defense Chuck Hagel during their meeting in the Pentagon in Washington D.C. , the United States, on Aug. 19, 2013. (Xinhua/Zhang Jun)

Chinese State Councilor and Defense Minister Chang Wanquan (R, Front) is welcomed by U.S. Secretary of Defense Chuck Hagel during their meeting in the Pentagon in Washington D.C. , the United States, on Aug. 19, 2013. (Xinhua/Zhang Jun)

Chinese State Councilor and Defense Minister Chang Wanquan (R) is welcomed by U.S. Secretary of Defense Chuck Hagel during their meeting in the Pentagon in Washington D.C. , the United States, on Aug. 19, 2013. (Xinhua/Zhang Jun)