Chinese President Hu Jintao (C) speaks during a luncheon hosted by US Vice President Joe Biden(L) and Secretary of State Hillary Clinton(R) at the State Department in Washington, the United States, Jan. 19, 2011. [Xinhua]

Chinese President Hu Jintao (C) raises a toast during a luncheon hosted by US Vice President Joe Biden(L) and Secretary of State Hillary Clinton(R) at the State Department in Washington, the United States, Jan. 19, 2011. [Xinhua]