From 1995 to 1998 he spray-painted over 2000 giant profiles of his own bald head on buildings throughout Beijing, placing the images alongside 'chai' characters painted by the city authorities to indicate that a building is scheduled for demolition.Anne-Marie Broudehoux, The Making and Selling of Post-Mao Beijing, Routledge, 2004, pp221-2. ISBN 0415320577Wu Hung in Carol Appadurai Breckenridge, Cosmopolitanism, Duke University Press, 2002, p189. ISBN 0822328992