Mahjong players in Tangba village, Chengdu city of Southwest China's Sichuan province avoid the summer heat by playing in a cave, August 17, 2011. Temperatures in the cave remain around 22 C, attracting local residents on hot summer days where they spend their time drinking tea or playing mahjong. [Photo/CFP]

A giant panda cools down with an ice block at a giant panda base in Chengdu, Southwest China's Sichuan province, on August 17, 2011. The base personnel sent ice blocks and air conditioners to offer relief to pandas amid hot temperatures. [Photo/Xinhua]