Introduction: The text of the brick is vertically written. The characters are cut in intaglio and of double line inscribed regular script. One side of the inscription is: Dispatching Officer of Changsha Prefecture, Jingli Gao Yao, Clerk Yang Yuanshan; Dispatching Officer of Liuyang County, county government official magistrate Fu Li and clerk Zhou Zhongwei. The calligraphy of this brick is graceful and beautiful, It is rare to use the way of double line inscription on the bricks and it is the masterwork of the city wall bricks.