Watch HDToday. In the twilight years of the Cultural Revolution, a Chinese filmmaker slowly becoming blind tours the country screening her last film to peasants. In it, the woman imagines two "alien" lovers walking from end-to-end along the Great Wall to join each other in the middle, one last time. This documentary is an adaptation of Ulay and Marina Abramovic's final collaborative project, the 1988 performance "The Lovers: The Great Wall Walk."