Yunlong Lake was originally named "Dustpan Lowland". One of the most attractive natural scenic sites in Xuzhou, Yunlong lake resides at the foot of Yunlong mountain to its east, Han mountain and Tianqi mountain to its west, and Quan mountain and Zhu mountain to the south. May to July is the best time to jog along this route with fresh air and quiet ambiance. [China.org.cn]