The re bridge is an international cross-sea bridge linking the Danish capital Copenhagen with the Swedish industrial town Malmö. It is a rare bridge in the world consisting of bridges, artificial islands, and undersea tunnels. The bridge was officially opened on July 1, 2000, with a total length of 16 kilometers, of which the west side of the submarine tunnel is 4050 meters long, wide 38.8 meters, high 8.6 meters, located below 10 meters under the seabed, composed of five pipelines, they are two train lanes, two dual-lane roads and one evacuation passage. It is the most spacious undersea tunnel in the world; the artificial island in the middle is 4,055 meters long, connecting the two sides of the project; The east side of the sea-crossing bridge is 7845 meters long, the upper is the 4-lane expressway, the lower is the opposite train track, there are 51 piers, the middle is the cable-stayed bridge, the span of 490 meters, the height of 55 meters, is the world's largest cable-stayed bridge built with the largest weight. In the spring of the year before, I took the car through the Orle Strait Bridge to Malmö. I drilled a tunnel in the car. I could only experience the bridge. I could not cover the whole picture of the bridge. I was in this mountain and reached Malmö. I looked at the whole picture of the bridge by the Orle Strait. The bridge is like a floating line on the water.