Introduction to the Sigong Pavilion Stone Stele: There are four stone steles in the pavilion, respectively engraved with the great achievements of the ancestors of the four surnames "Zhang, Chen, Shen and Zheng" who entered Guizhou. In particular, Chen Dian, who was the "Tongzheng doctor" (the Tongzheng doctor was the official in charge of the postal service), built a post station in Tianlong and built a pond house (a place for people to stay at the post station). The ancestors of the other three major surnames who entered Guizhou built " "Tunbao" to station the army.