Deshengmen Arrow Building , located on the west side of the north and west of the city in Xicheng District, Beijing, is one of the nine gates of Beijing's inner city. It was built in the Ming Orthodox four years (1439), and was rebuilt in the Qing Kangxi period due to the collapse of the earthquake. The original Desheng Gate was composed of the city building, arrow building and the city. When the underground railway was built in 1969, the city walls near Deshengmen were demolished, leaving only part of the Arrow Tower and the city of Yucheng.