British singer Sarah Brightman attends the opening ceremony of an exhibition called "Treasures from Shanghai", displaying ancient Chinese jade and bronze masterpieces, at the British Museum in London, Britain, Jan. 29, 2009. Sarah Brightman officially became the Shanghai 2010 World Expo Promotion Ambassador in Britain on Thursday during the ceremony. The exhibition launched the Shanghai Week in London which will showcase the heritage and culture of Shanghai as it prepares for the World Expo 2010.