Today is the opening day of Hangzhou Bay Bridge. I stayed in front of the TV early to watch the live broadcast. I thought: How can you build a bridge on the rough sea? The TV station specially invited bridge-building experts as guests to explain and answer our doubts in time. It turns out that in the early days of building the bridge, the workers' uncles had similar problems to ours, but no difficulty could beat our clever workers' uncles and technical experts. They came up with one good solution after another, solved one difficult problem after another and created a miracle of the world! In order to transport very heavy bridges, they also made a special 16 wheel cart; In order to bridge more conveniently and quickly, they invented the world-leading bridge-building technology and accelerated the speed of bridge construction. This bridge-building technology also spread to South Korea, winning glory for the country. This sea-crossing bridge is very spectacular. It is 36 kilometers long, 30 meters wide and has six lanes. In order to prevent drivers from driving fatigue, the workers specially painted the railings of the bridge with colorful colors, like a beautiful rainbow across the banks of the Qiantang River, which facilitated people's travel. Dad said: "the sightseeing platform of the cross-sea bridge has not been built yet." The speed limit of the car is 60 ~100 km/h. If you go to see it, you can't see it clearly. I will take you to see the platform when it is built. " I am very happy to hear that. I really hope this day will come soon, and then I can stand on the platform and listen to the waves blowing the sea breeze!