Today is the opening day of Hangzhou Bay Bridge. I waited by 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 answered our doubts in time. It turned out that in the early stage of bridge construction, the workers' uncles had similar problems to ours, but any difficulties could not beat our clever workers' uncles and technical experts. They thought of one good solution after another, solved one difficult problem after another and created a miracle in the world! In order to transport very heavy bridges, they also specially made a cart with 16 wheels; 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 honor for our country. The sea-crossing bridge is spectacular. It is 36 kilometers long, 3 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 facilitates people's travel. Dad said: "Now the sightseeing platform of the cross-sea bridge has not been built, and the speed limit of the car is 6 ~ 1 km/h. If you go to see it, you can't see it clearly. I will take you to see it after the platform is built." After hearing this, I am very happy. I really hope that this day will come soon, and then I can stand on the platform and listen to the waves and blow the sea breeze!