Sannvdui, formerly known as Sannvdun, was named in the Song Dynasty's Xian Chun Lin An Zhi. That is, there is a stone tomb in the campus of Haining Middle School in Chang 'an Town from the end of the Eastern Han Dynasty to the Three Kingdoms period. The location of the tomb turned out to be a small mound, which is said to be the relocation and burial place of Wu Dadi's third daughter Sun Luyu during the Three Kingdoms period. "Haining County Records" has been published for eight years: "Three women's piles, ... according to legend, Sun Quan's third woman was also a tomb three feet and an acre high on Tuesday ..."