A man, donned in full diving gear, shows his mahjong tiles underwater in a swimming pool in Xiangtan, Central China's Hunan province, Aug 9, 2013. Four divers, equipped with oxygen tanks, played mahjong to avoid the scorching heat as temperatures fall to 29 C at 5.5-meters deep and 11 C at 10-meters deep. It is not known if the water pressure and oxygen improves your skill at this ancient game played across China, but it is certainly a cool way to play. [Photo/CFP]

  Four divers play mahjong underwater to avoid the scorching weather in Xiangtan, Hunan province, Aug 9, 2013. [Photo/CFP]