Introduction to Shengqi Tower: Ming Taizu Zhu Yuanzhang liked hunting and playing chess. In the early years of Hongwu, he built an imperial garden on the bank of Mochou Lake outside Sanshan Gate. Qinggong Tower is one of them. When playing chess with Xu Da, Xu Da used black and white chess pieces to form the word "Long Live" on the chessboard. Taizu Longyan was very happy and immediately awarded the Qinggong Tower and Mochou Lake Garden to Xu Da, and named the building "Shengqi Tower".