Visitors gather under a tomato tree, which can bear about 3,000 kilograms of fruits annually, during the 10th China (Shouguang) International Vegetable Sci-tech Fair in Shouguang, east China's Shandong Province, on April 20, 2009. Over 2,000 varieties of vegetables, fruits and flowers were exhibited during the annual fair opened on Monday in Shouguang, a city famous for its vegetable production. (Xinhua/Wu Jingdan.