The grave was robbed in July 1994 because of the high artistic level of its wall paintings and reliefs which are of great historical value.
Thieves used dynamite to blast their way into the tomb before removing several painted marble relief panels.
One of the panels was advertised for sale in a Christie's New York Fine Chinese Ceramics, Paintings and Works of Art auction catalogue in 2000.
[2] It provides information about the musical tastes of the upper classes during the late Tang dynasty.
In the front row there are five women (from right to left) playing the konghou (箜篌; bow harp), the guzheng (古箏; an 18–23-stringed plucked zither with moveable bridges), pipa (琵琶; lute), paiban (拍板; bamboo clapper) and dagu (大鼓; bass drum) while, in the back row, there are seven women playing the sheng (笙; mouth organ), fang xiang (方響; Chinese metallophone), dalagu (答臘鼓;[3] West Asian cylindrical drum),[4] two bili (篳篥; oboes), and two bamboo transverse flutes (hengdi 橫笛 or dizi 笛子).