(110226) -- WASHINGTON D.C., Feb. 26, 2011 (Xinhua) -- Li Xiaolin (1st R), vice president of the Chinese People's Association for Friendship with Foreign Countries (CPAFFC), and Chris Gregoire, chair of the U.S. National Governors Association (NGA) and also Washington Governor, sign an agreement at a ceremony in Washington D.C., capital of the United States, Feb. 26, 2011. China and the United States on Saturday signed an agreement to formally establish the China-U.S. Governors Forum to promote sub-national exchanges and cooperation. (Xinhua/Lin Yu) (wjd)