A worker installs a countdown board for the 2010 Shanghai World Expo at the People's Square metro station in Shanghai on September 8, 2008. Shanghai has kicked off activities to mark the 600-day Expo countdown. [Photo: Xinhua]
An earthquake measuring 7.8 on the Richter scale jolted Sichuan Province at 2:28 PM on May 12.
![A worker installs a countdown board for the 2010 Shanghai World Expo at the People's Square metro station in Shanghai on September 8, 2008. Shanghai has kicked off activities to mark the 600-day Expo countdown. [Photo: Xinhua]](http://images.china.cn/attachement/jpg/site1007/20080909/001109b42f730a3031df57.jpg "A worker installs a countdown board for the 2010 Shanghai World Expo at the People's Square metro station in Shanghai on September 8, 2008. Shanghai has kicked off activities to mark the 600-day Expo countdown. [Photo: Xinhua]")
