Workers build a water conservation tank to offer drinking water to drought affected villagers in Qujing City, southwest China's Yunnan Province, Feb. 13, 2012. According to latest figures from provincial civil affairs authorities, about 6.31 million people in 91 counties in the province have been affected by the drought as of Feb. 16. The drought has left more than 2.42 million people and 1.55 million livestock short of drinking water.