Introduction to the Yangtze River Bridge: The Nanjing Yangtze River Bridge is located between Pukou District and Xiaguan District in Nanjing City. The upper layer is a highway bridge and the lower layer is a double-track railway bridge. It connects the two main railway lines of the Jinpu Line and the Shanghai-Nanjing Line and serves as a national north-south transportation It is necessary to nourish the body and vitality.