Late at night, when the "magic arrow" left the ground calmly, passed the moon and turned to fly to space, hundreds of millions of spectators who were watching before the live broadcast of the launch were shocked by this magnificent scene, and even triggered imagination to look forward to the day when China's manned space flight headed for the moon. At 23:08 on November 29, Beijing time, the Long March 2F Remote 15 carrier rocket carrying the Shenzhou 15 manned spaceship ignited and launched at Jiuquan Satellite Launch Center. The spaceship successfully entered the scheduled orbit, the astronauts were in good condition, and the launch was a complete success. So far, 12 launch missions in the key technology verification and construction phase of China's space station have been completed. After the Shenzhou XV spacecraft entered orbit, at 5:42 on November 30, Beijing time, it successfully independently and rapidly rendezvous and dock with the forward port of the space station and the core module. The crew of the Shenzhou XV astronauts entered the orbital module from the return capsule of the spacecraft. After all preparations were completed, at 7:33 on November 30, Beijing time, the long-awaited crew of Shenzhou XIV astronauts successfully opened the "home gate" and warmly welcomed relatives from afar to the "Tiangong". Nine years later, China's space industry is developing rapidly. We have launched several manned spacecraft to the sky in succession, and completed the "T" basic configuration of China's space station... Now, for the first time, two batches of astronauts are on orbit at the same time. In the future space journey, China will keep astronauts on orbit for a long time, and Chinese astronauts can welcome the visit of manned spacecraft at their own space stations. At present, the Chinese space station 400 kilometers away from the earth has formed the largest configuration of "three compartments and three ships", that is, based on the "T" basic configuration composed of "three compartments" of Tianhe core module, Tianwen experimental module and Mengtian experimental module, and at the same time, it connects the Shenzhou XIV manned spacecraft, Tianzhou 5 cargo spacecraft and Shenzhou 15 manned spacecraft. The stable operation of the spacecraft assembly with a total mass of nearly 100 tons on orbit demonstrates China's outstanding capabilities in the field of manned spaceflight, as well as China's strong comprehensive national strength and overall scientific and technological strength. However, we are far from satisfied with this. China's space station has the expansion capability of docking three new modules on the basis of the existing three module configuration to form a six module assembly of about 180 tons. Chinese astronauts in the new era still have the ability to continue to write new heights and wonders of China. When a group photo of six astronauts from two groups of astronauts who successfully joined forces in China's own space homeland appeared in front of people's eyes, we were more hopeful about the upcoming landmark achievements. Later, the two crew members will perform the first on orbit rotation at the space station. During this period, the six astronauts will work and live together in the space station for about five days to complete various tasks and handover. In the near future, China's space station will be officially completed, which means that in the future, two space laboratories built by human beings to explore the boundless universe will be in orbit in the vast space at the same time. They will connect the earth and deep space, human and the universe