A worker demonstrates how to use the seat in the first-class cabin of the Airbus A380 superjumbo at the Pudong International Airport in Shanghai, east China, Oct. 25, 2007. The A380 was open to public here on Thursday. The Airbus A380 superjumbo is on its week-long demonstration tour of China, which includes Guangzhou, Shanghai and Beijing.(Xinhua/Chen Fei)