For the first time since her arrival in exile in Germany, Chinese artist Liu Xia, widow of Nobel Peace Prize laureate Liu Xiaobo, is exhibiting her works in a Western country. On view is a selection of black-and-white photographs taken between 1996 and 1999. At that time, Liu Xiaobo spent three years in prison in the Dalian labor camp, and Liu Xia, coming from painting, increasingly turned to photography. She created her very own cosmos, populated by dolls, a series which she called "Ugly…