Retired engineer Liu Kezhu shows his collections of pictures of late Chinese leader Chairman Mao Zedong (1893-1976) in Xiangfan, central China's Hubei province, Sept. 6, 2009. Liu, a retired senior engineer of the Jianghua Machinery Factory in Xiangfan, has collected more than 1,500 pictures of Chairman Mao. [Xinhua]