This file photo taken on Feb. 26, 2009 shows Chinese painter Wu Guanzhong poses for a photo in front of his wife's portrait during his personal exhibition in Beijing, capital of China. Wu, the master of Chinese painting, passed away at 11:57 p.m. on Friday in a hospital in Beijing at the age of 91. Wu, born in 1919, is a native of Yixing, Jiangsu Province, east China.[Xinhua]