Tianjin welcomes World Expo caravans

Four buses, promoting the Shanghai World Expo, have arrived in North China's port city of Tianjin.

The caravans, bearing colorful expo images, will be in the city for three days. In addition to an Expo film show and performances, caravan staff members are on hand to answer questions about the forthcoming event. The caravans began their journey in Shanghai on March 18th. They'll travel 5 and a half thousand kilometers in 18 days.