On this day, 43 years ago, on October 7, 1982 (August 21, 1982, the lunar calendar), my country successfully launched a launch vehicle into a predetermined sea area. Spectacular scenes of rocket lift-off continuously photographed on a work boat. From October 7 to 16, 1982, my country successfully launched a carrier rocket into a predetermined sea area, achieving the expected purpose. This achievement marks a new development in my country's launch vehicle technology. On October 16, the Central Committee of the Communist Party of China, the State Council, and the Central Military Commission sent a telegram to comrades who participated in the development and launch tests of my country's launch vehicles, congratulating my country on its successful launch of launch vehicles at sea. On October 25, the National Defense Science, Technology and Industry Commission and the Navy held a grand celebration meeting to warmly celebrate the complete success of the submarine underwater launch vehicle. At the meeting, Zhang Aiping, Deputy Secretary-General of the Central Military Commission, was entrusted by the Party Central Committee, the State Council, and the Central Military Commission to express condolences and congratulations to all the participants. At the end of her speech, Zhang Aiping excitedly recited the poem "Meet and Have a Happy Meeting" to express her warm congratulations. The poem says: Promote the heroes on the sea and fight against the wild waves. The divine sword flew over, and lightning broke through the clouds. The sky shines, the sky sweeps, and victory is in jeopardy. The world cheered, and the generation was exquisite and arrogant. According to reports at the time: When the timer pointer pointed to "0", the dragon-like carrier rocket quickly jumped out of the blue sea. The rocket flew along a predetermined trajectory, leaving a ray of white smoke in the blue sky, a trajectory of victory. The engine of the new launch vehicle launched this time uses new technologies, new fuels, and new materials in the world.