前赵
刘防，新兴（今山西忻州市）匈奴人。刘绿的父亲，刘曜的祖父。由于刘曜是刘渊的族子，
刘防应是南匈奴羌渠单于的侄孙，持至尸逐侯单于的堂侄，刘豹的再从兄弟。318年，刘曜称帝，追尊他为懿皇帝。
Liu defense, new (now Shanxi Xinzhou City) Huns. Green's father, Liu, Liu Yao's grandfather. Liu Yuan Liu Yao is the family as children, should be the South Hsiungnu Qiang Liu prevent drainage Chanyu's grandniece, by holding to the corpse of the Tang Zhi Hou Chanyu, Liu leopard again from brother. 318, Liu Yao emperor, Emperor Yi Zhuizun him.