Introduction to the Tomb of Concubine Quan: The Tomb of Concubine Quan, also known as the Empress’ Tomb, is located in a mountain valley surrounded by mountains on three sides and open to the south. It is located 15 kilometers west of Yicheng, Zaozhuang City. The tomb seal is about 8 meters high, with a bottom circumference of more than 60 meters, and is covered with pines and cypresses. In front of the tomb, a stream of spring water overflows southward.