Tourists visit a scenic spot on the Bashang grassland in Guyuan county, North China's Hebei Province, July 20, 2013. The grassland has attracted many tourists to enjoy the cool weather there.(Xinhua/Wang Xiao)

Tourists visit a scenic spot on the Bashang grassland in Guyuan county, North China's Hebei Province, July 20, 2013. The grassland has attracted many tourists to enjoy the cool weather there.(Xinhua/Wang Xiao)

 Tourists take photos at a scenic spot on the Bashang grassland in Guyuan county, North China's Hebei Province, July 20, 2013. The grassland has attracted many tourists to enjoy the cool weather there.(Xinhua/Wang Xiao)

Tourists pose for photos at a scenic spot on the Bashang grassland in Guyuan county, North China's Hebei Province, July 20, 2013. The grassland has attracted many tourists to enjoy the cool weather there.(Xinhua/Wang Xiao)

Tourists visit a scenic spot on the Bashang grassland in Guyuan county, North China's Hebei Province, July 20, 2013. The grassland has attracted many tourists to enjoy the cool weather there.(Xinhua/Wang Xiao)