Introduction to the ruins of the East and West Cities: is the actual place where the history of Yehe took place. After more than four hundred years of wind and rain erosion, it still retains its original importance. Yehedongcheng is located on the south bank of Yehe River and on the south side of the highway. Queen Xiaocigao was born here. This is an ideal place for experts and scholars to research the history of Ye He.