Secretary of Defense Robert M. Gates is greeted by Gen. Jing Zhiyuan. Secretary of Defense Robert M. Gates is greeted by Chinese Commander, 2nd Artillery Group Gen. Jing Zhiyuan at their facility in Qinghe, China, on Jan. 12, 2011. Gates wrapped up a 4-day trip to China by visiting the People's Liberation Army 2nd Artillery Group and the Great Wall. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 469055-P-VKR40-828.jpg Photo Gallery