Introduction: The text of the brick is vertically written. The characters are cut in relief and of regular script. One side of the inscription is: Dispatching Officer of Yangzhou Prefecture, Tongzhi Zhu Xiang, and clerk Tao Xu; Dispatching Office of Taixing County,Assistant of County Magistrate Wang Ding, and clerk Wu Heng In the brick text, the""Dispatching Officer"is a post temporarily set by the imperial court according to the needs of the major project. It is served by a corresponding official and will be cancelled when the project is completed.