Located 80 kilometers northwest of the ancient city of Xi'an, capital of northwest China'sShaanxi Province，Qianling is the joint tomb of Wu Zetian, who remained in power for 50 years, and her husband, Emperor Li Zhi of the Tang Dynasty. It is also the only tomb in China which contains the bodies of two emperors. Wu Zetian, the only female emperor in Chinese history, was buried into the tomb 22 years after her husband.

Authorities said they have found evidence of eight attempted robberies of the tomb, which all ended in failure and have lent even more mystery to Qianling, the only Tang tomb which has not been looted.

Almost all visitors to the tomb wonder where the underground palace is, where the emperors were laid to rest, as well as the conditions of numerous treasures buried inside the tomb, built more than 1,200 years ago. To the southeast of Qianling Mausoleum there are many other tombs. According to historical records, 17 people were buried by the side of Qianling Mausoleum. Five of them had already been excavated, including the Tomb of Crown Prince Zhanghuai, the Tomb of Crown Prince Yide and the Tomb of Princess Yongtai. Many treasures such as splendid murals and Tang San Cai (tri-color pottery) were discovered in the tombs. Now all the treasures are well preserved in Qianling Museum in the tomb yard of Princess Yongtai.