WUHAN, CHINA – OCTOBER 9: (CHINA OUT) A visitor is visible behind work by artist Xu Tan entitled “Untitled, Dreaming Pigs” at the 2nd China Documentary Exhibition of Fine Arts on October 9, 2007 in Wuhan of Hubei Province, China. Wu, born in 1957, is known for video and installation art and has exhibited at PS1 in New York City and many other venues. About 80 artists display their art during the event with the theme “Forms of Concepts: The Reform of Concepts of Chinese Contemporary Art 1987 – 2007”. (Photo by China Photos/Getty Images)