燕国
(?
257 BC～
255 BC)
During this period, the Eastern Zhou Qin destroyed, moved Jiuding. Yan State during this period may have built the Great Wall, made from sun to Xiangping (now Liaoning Liaoyang), and set up the Valley, Yu Yang, right Peking, western Liaoning, Liaodong Gogun. Neighbor Guoliang inference "Yan built Great Wall north, not Yan Wangxi time in the Xiao Wang Dynasty."