Among the railway trunk lines that run through the north and south of China, those that are intertwined with the "golden waterway" of the Yangtze River have convenient land and water transportation.

Among the railway trunk lines running through the north and south of China, the Beijing-Shanghai line, the Beijing-Kowloon line, the Beijing-Guangzhou line and the Liujiao line are intertwined with the "golden waterway" of the Yangtze River, with convenient land and water transportation.

Among the east-west railway trunk lines, the longest is the Longhai Line, which is the eastern part of the "Second Eurasian Continental Bridge", and Lianyungang is the east bridgehead.