Since entering China's space station on October 26, the astronaut crew of the Shenzhou-17 spacecraft composed of Tang Hongbo, Tang Shengjie, and Jiang Xinlin has been on a business trip for almost a month and a half. According to the plan, the Shenzhou-17 spacecraft will be in orbit for about 6 months, which also means that a quarter of the Shenzhou-17 spacecraft mission has passed. 
In the past month or so, the astronaut crew of the Shenzhou-17 spacecraft has completed many scientific experiments and experiments. For example, the three astronauts carried out lower limb kinematic test experiments and visual function research under close cooperation, in addition, the astronauts also carried out the payload out of the cabin mission, and the experimental payload automatically exited from the cargo airlock door of the Mengtian experimental module to carry out relevant space exposure experiments. 
When the Shenzhou-16 spacecraft evacuated the Chinese space station, the astronauts of the Shenzhou-17 spacecraft also took pictures of the Shenzhou-16 spacecraft when it was evacuated, and we can see the Shenzhou-16 spacecraft flying in space. 
In the future, the astronaut crew of the Shenzhou-17 spacecraft still has many important tasks to complete, one of which is to go out of the capsule to maintain and repair the solar panels of the space station, and the other task is to welcome the arrival of the Tianzhou-7 cargo spacecraft. 
In low-Earth orbit, there are countless small fragments flying around the Earth, and these small fragments are fast and sometimes collide with various spacecraft. It has been more than 2 years since the first module of China's space station went into space, and for such a long time, our space station solar panels have indeed been hit by some small space particles, resulting in some damage to the space station solar panels. 
Although it was hit by small particles in space, our space station is now free of safety issues, which are all in the design consideration of scientists, and you don't need to worry. However, considering that our space station needs to operate for more than ten years or even longer, it will definitely need to be maintained and repaired according to the state of the space station in the future. 
The launch time of Tianzhou-7 was determined to be different from the previous astronaut crew, and before the launch of the Shenzhou-17 spacecraft, we did not launch the Tianzhou-7 cargo spacecraft in advance, but did not launch until the beginning of next year. 
This is because the Tianzhou-6 cargo spacecraft, which is currently flying on the Chinese space station, has been upgraded, and its cargo capacity has been greatly increased compared with the previous Tianzhou series of spacecraft. To put it simply, the Tianzhou-6 cargo spacecraft carries more cargo than the previous cargo spacecraft, which can support the astronaut crew to stay in orbit for a longer time, and can meet the materials required by the astronauts for an additional three-month space mission. 
That's why the Tianzhou-7 cargo spacecraft won't be launched until January next year. From the point of view of time, the Tianzhou-6 cargo spacecraft was launched in May this year, and the flight time has been more than half a year, and by the time the Tianzhou-7 cargo spacecraft is launched, the Tianzhou-6 cargo spacecraft will be in orbit for 8-9 months, which is within the design range of the Tianzhou-6 cargo spacecraft.
Some time ago, the Tianzhou-7 cargo spacecraft has completed the relevant work of leaving the factory, and has arrived at the Wenchang Space Launch Site. When the launch window arrives, the Tianzhou-7 cargo spacecraft will be launched to China's space station. 
After the launch of the Tianzhou-7 cargo spacecraft, we will have three more spacecraft to the Chinese space station next year, that is, the Shenzhou-18 manned spacecraft, the Shenzhou-19 manned spacecraft, and the Tianzhou-8 cargo spacecraft.
Judging from the mission time of the Shenzhou 17 spacecraft, they are expected to return to Earth in April next year, and according to the previous practice, the astronaut crew of the Shenzhou 18 spacecraft should also rotate with the astronaut crew of the Shenzhou 17 spacecraft in orbit, which means that the Shenzhou 18 spacecraft will be launched before the return of the Shenzhou 17 spacecraft.
Foreign astronauts have been invited Since the construction of our space station, many netizens are concerned about whether foreign astronauts will come to our space station. In fact, we welcome countries from all over the world to participate in our space station missions, and many countries have expressed their desire to participate in the mission.
We have also extended an invitation to the whole world to welcome all countries and regions committed to the peaceful use of outer space to participate in China's space station mission, and now we are ready to invite foreign astronauts to participate in China's space station mission. Of course, although we have extended invitations to the world, it does not mean that foreign astronauts will be able to participate in our space station missions after signing up.
Because participating in a space flight is a very serious thing, and there can be no mistakes. For example, foreign astronauts must meet the conditions for being able to perform space missions to participate in our space station flight, and our space station operation interface is Chinese, if foreign astronauts want to enter our space station, learning Chinese is very important.
Just imagine, if foreign astronauts do not learn Chinese well, it may be very dangerous to enter our space station. Because they can't communicate with us normally, and they can't live and work well on the space station.
Therefore, if foreign astronauts want to enter our space station, the first hurdle must be to learn Chinese, and then come to China to participate in a series of training, including familiarizing themselves with our spacecraft and space station. Only by ensuring that foreign astronauts have access to communication and operate space station equipment without barriers will they have the opportunity to participate in our space station missions.