Photo taken on March 31, 2008 shows a part of the roof of a house at the architectural complex of the official residence of Cen Mi, a tusi (system of appointing national minority hereditary headmen in the Yuan, Ming and Qing dynasties) in Ming dynasty, at Nalao town, Xilin county, southwest China's Guangxi Zhuang Autonomous Region. The architectural complex, covering an area of over 4,000 square meters, was first built by Cen Mi and expanded by his posterity.