A traditional ethnic Dong singing performance at the opening ceremony of the Eco Forum Global Annual Conference Guiyang 2015 in Guiyang, capital city of southwest China's Guizhou province, June 27. The annual Eco Forum Global Conference take place in Guiyang, southwest China's Guizhou province between June 26-28. It aims to engage leaders in business, politics, academia and other areas to highlight concerns in ecology and environment.[Photo/gog.com]