A water-buffalo fight is organized to celebrate the New Year of Dong ethnic group in Rongjiang county, Southwest China's Guizhou province, Jan 20, 2015. Tuesday marked the first day of the first month in the ethnic group's calendar. The population of Dong ethnic group in China is 2.96 million, according to the fifth national population census in 2000. Dong people live mostly in Guizhou- Hunan -Guangxi borders. [Photo: China News Service/ Wang Bingzhen]