U.S. ambassador to China Gary Locke (C) does gardening works with young students during his visit in Jinzhou Primary School of east China`s Shanghai Municipality, Oct. 12, 2011. (Xinhua/Liu Ying)

U.S. ambassador to China Gary Locke (R Front) talks with a young student during his visit in Jinzhou Primary School of east China`s Shanghai Municipality, Oct. 12, 2011. (Xinhua/Liu Ying)