This signature campaign (Chinese Original) to appeal for the immediate and unconditional release of Nobel Peace Prize laureate Liu Xiaobo and his wife Liu Xia begins circulating as the second anniversary of the Prize approaches. Liu is serving the fourth year of his 11-year prison term and is the only Nobel Peace Prize laureate in prison. His wife, Liu Xia, has been under unlawful to house arrest for more than two years, with two female police officers monitoring her around-the-clock.