Nanjing Yangtze River Fourth Bridge, a world-class super long-span bridge, is a three-span continuous steel box girder suspension bridge with a main span of 1418 meters, ranking third in the world and first in China among the same types of bridges. Based on continuous follow-up shooting, the film truly reproduces the construction process of the bridge, tells the story of the bridge builders who are fearless of challenges and dare to innovate, and shows a series of leading bridge construction technologies in the world.