Introduction to Puxiangyu Dingdong Tomb: is the mausoleum of Empress Xiaozhenxian (Empress Dowager Ci'an), the empress of Emperor Xianfeng. After the death of Emperor Xianfeng, he and Cixi listened to the government behind the curtain twice during the Tongzhi and Guangxu years for 20 years. This mausoleum combines many characteristics of the tombs of emperors and empresses of the Qing Dynasty and becomes the most complete empress mausoleum.