Volunteers and visitors thresh the newly harvested rice at the Ningbo Urban Best Practice Areas (UBPA) Case Pavilion in the World Expo Park in east China'a Shanghai Municipality, Oct. 25, 2010. The Ningbo UBPA Case Pavilion is the only rural pavilion in the World Expo Park.  [Xinhua]

Volunteers thresh the newly harvested rice at the Ningbo Urban Best Practice Areas (UBPA) Case Pavilion in the World Expo Park in east China'a Shanghai Municipality, Oct. 25, 2010. The Ningbo UBPA Case Pavilion is the only rural pavilion in the World Expo Park.  [Xinhua]