The Chinese PICC Pavilion at the west part of the Shanghai World Expo Park is seen illuminated on March 31, 2010 in Shanghai, China. The trial illumination of the total 18 enterprise pavilions and the surrounding public areas was operated on Wednesday night as a sign of 30 days counting-down of the Expo. [Xinhua]

The Cultural Centre Pavilion at the west part of the Shanghai World Expo Park is seen illuminated on March 31, 2010 in Shanghai, China. The trial illumination of the total 18 enterprise pavilions and the surrounding public areas was operated on Wednesday night as a sign of 30 days counting-down of the Expo. [Xinhua]