GORDON CHEUNG MILLGRAM'S PROGRESS STOCK LISTINGS, INK, ACRYLIC GEL AND SPRAY ON CANVAS 274 X 600CM / 108 X 240INCHES (4 CANVASES EACH 274 X 150CM / 108 X 60INCHES) COMMISSIONED BY SALLY LAI AND YUEN FONG LING FOR URBIS ON THE OCCASSION OF THE EXHIBITION ARRIVALS AND DEPARTURES: NEW ART PERSPECTIVES OF HONG KONG 2007 PRICE ON APPLICATION