A boy shows a heart-shaped watermelon in Nanjing, capital of east China's Jiangsu Province, May 28, 2006. Farmers of Hengxi town, Jiangning district of Nanjing assembled at Baima Park to display their well-cultivated watermelons, attracting lots of local residents' attention. (Xinhua Photo)

A visitor takes a close look of watermelons of various shapes in Nanjing, capital of east China's Jiangsu Province, May 28, 2006. (Xinhua Photo)