Yang Liwei: astronauts have to unload more than 1000 screws. Nie Haisheng dyed his hair black and white before he went on the expedition

At the launching ceremony of the network theme publicity and interactive guidance activities on the motherland held at Peking University today, Yang Liwei, the "Space Hero" who just came from the launch site, said: "this time, the three astronauts are going to carry out the mission again. As myself, I am very excited and feel great pressure for them. After entering the cabin, they have a lot of tasks. They have to unload more than 1000 screws alone. This time, the average age of our astronaut team is over 50 years old, among which Nie Haisheng is 57 years old. Before the battle, in order to make himself look young and energetic, he dyed his white hair black at the temples. "