In February (1279), the 16th year of Yuan Shizu to Yuan Dynasty, Song Jun was completely annihilated, the little emperor threw himself into the sea, and the Song Dynasty was completely destroyed. The Yuan Dynasty formally unified China and became the first state power established by ethnic minorities in the history of China.

At this time, Yang Lian Jia Zhen, a disciple of Buddhist Basiba, took advantage of the religious theory of "overwhelming victory" to cater to Kublai Khan, saying that breaking the Mausoleum of the Song Dynasty would cut off the possibility of its resurgence, and pressing the remains of the Emperor of the Song Dynasty under the stupa would subdue the adherents of the Song Dynasty, cut off their nostalgia and nostalgia for the Song Dynasty, and then support the rule of the Yuan government.

With the acquiescence of the rulers of the Yuan Dynasty, Yang Lian Jia Zhen, the chief photographer of Jiangnan Buddhism, began to dig the tombs of the Southern Song Dynasty crazily, and the tombs of Song Ningzong, Song Lizong and Song Duzong were the first to be stolen.

Especially when Song Lizong's body was dug up, it didn't rot. Some people say that it was because his mouth contained a luminous pearl, so thieves carried Song Lizong's body out, hung it upside down on a tree, dug it out of his mouth, and let the antiseptic mercury flow all over the floor. Yang Lian Jia Zhen thought Song Lizong's head was strange, so he cut it off for himself. Later, he made it into a skeleton wine vessel and treasured it.

Soon after, they robbed the tombs of four Empresses Song Huizong, Song Qinzong, Song Gaozong, Song Xiaozong and Song Guangzong, and collected the following items: Ma Wu Yu's pencil case, copper cool rust tube, white tooth comb, incense bone case, Hu Fu pillow, Qin Yun piercing hole, golden cat's eye and fish shadow Joan fan handle.

After the tomb of the Southern Song Dynasty was stolen, some officials of the Yuan Dynasty and the imperial clan of the Southern Song Dynasty repeatedly appealed to Kublai Khan, demanding that the grave robbery be stopped, but Kublai Khan turned a deaf ear to this.

It is said that Yang Lian Jia Zhen once gave Kublai Khan some treasures stolen from the imperial tombs of the Southern Song Dynasty, and Kublai Khan decorated Tianyi Pavilion with these treasures. Kublai Khan's acquiescence in Yang Lian Jia Zhen's illegal excavation of the imperial tomb in the Southern Song Dynasty also has its political factors.