Exhibition installation of Expo 2010 proceeding on schedule

The combo picture taken on Feb. 19, 2010 shows different phases of trial illumination at the Sunshine Valley of of 2010 Shanghai World Expo, in Shanghai, east China. The construction and exhibition installation of 2010 Shanghai World Expo are proceeding steadily on schedule during the Spring Festival holidays. (Xinhua)

Builders work on the Sunshine Valley of 2010 Shanghai World Expo, in Shanghai, east China, Feb. 19, 2010. The construction and exhibition installation of 2010 Shanghai World Expo are proceeding steadily on schedule during the Spring Festival holidays. (Xinhua)

Builders clean the Sunshine Valley of 2010 Shanghai World Expo, in Shanghai, east China, Feb. 19, 2010. The construction and exhibition installation of 2010 Shanghai World Expo are proceeding steadily on schedule during the Spring Festival holidays. (Xinhua)

Builders work on the Sunshine Valley of 2010 Shanghai World Expo, in Shanghai, east China, Feb. 19, 2010. The construction and exhibition installation of 2010 Shanghai World Expo are proceeding steadily on schedule during the Spring Festival holidays. (Xinhua)