Beijing, China - Recent (CCTV - No access Chinese mainland)
1. Various of space station core module under construction
2. Various of welding work in progress
3. Space station core module under construction
4. Various of welding work in progress
5. SOUNDBITE (Chinese) Zheng Xing, senior technician, 529 Factory of China Academy of Space Technology, China Aerospace Science and Technology Corporation (starting with shot 4):
"We can't start welding (the space station core module) if the test product cannot meet up to the required standards. We encountered such problem on a number of occasions."
6. Various of Zheng working with colleagues
7. Instrument showing temperature, humidity
8. Various of workers at work
9. Various of workers setting heating lamp
10. Various of Zheng adjusting equipment, welding plates
11. SOUNDBITE (Chinese) Zheng Xing, senior technician, 529 Factory of China Academy of Space Technology, China Aerospace Science and Technology Corporation (starting with shot 10/partially overlaid with shot 12):
"Sometimes, the welding helmet was wet all over with sweat, blurring the vision. I have to wipe it from time to time. It is worthwhile for the sake of guaranteeing quality."
++SHOT OVERLAYING SOUNDBITE++
12. Zheng sweating
++SHOT OVERLAYING SOUNDBITE++
13. Various of Zheng taking meal our of microwave, having meal
14. Zheng's certificate of winning third place in skill competition

FILE: Beijing, China - Date Unknown (CCTV - No access Chinese mainland)
15. Graduation photo of Zheng, his class

Beijing, China - Recent (CCTV - No access Chinese mainland)
16. SOUNDBITE (Chinese) Zheng Xing, senior technician, 529 Factory of China Academy of Space Technology, China Aerospace Science and Technology Corporation (starting with shots 15/ending with shots 17-18):
"The first day when I came to the factory, the then director Lu, who was in charge of my workshop, took me to see the slogan behind us. Every welding point concerns the life of the astronauts. Every process concerns success or failure of manned spacecraft. It was at that time that I realized the heavy responsibilities on our shoulders,"
17. Various of slogan reading 'The safety of the astronaut depends on every welding point we make'
18. Zheng reading slogan

Wenchang Spacecraft Launch Site, Hainan Province, south China - April 29, 2021 (CCTV - No access Chinese mainland)
19. Various of combination of core module Tianhe of China's space station, Long March-5B Y2 rocket at launching area

Beijing, China - Recent (CCTV - No access Chinese mainland)
20. SOUNDBITE (Chinese) Zheng Xing, senior technician, 529 Factory of China Academy of Space Technology, China Aerospace Science and Technology Corporation (starting with shot 19/ending with shots 17-18/ending with shot 21):
"I feel very proud to see the products for state major projects coming out of the hands of our workers."

Wenchang Spacecraft Launch Site, Hainan Province, south China - April 29, 2021 (CCTV - No access Chinese mainland)
21. Various of launch countdown, rocket carrying Tianhe blasting off; monitoring screen showing rocket in flight

The superb skills and sharp mind of a worker, who welded China's space station core module, guaranteed its successful launch.

Zheng Xing, a senior technician of the 529 Factory of China Academy of Space Technology under the China Aerospace Science and Technology Corporation, has welded many spacecrafts for China's space mission, including the core module of the new space station which was launched from the Wenchang Spacecraft Launch Site in south China's Hainan Province on Wednesday.

The welding of the core module is not an easy work as the total length of the seams to be welded is over 300 meters and is required to be finished at one go.

"We can't start welding (the space station core module) if the test product cannot meet up to the required standards. We encountered such problem on a number of occasions," said Zheng.

Zheng found that when the air humidity exceeded 40 percent, the number and size of the pores in the welding seam increase significantly.

After repeated perusing, he found a new way of welding, that is, to use two rows of lamps to heat the work surface to reduce the number of pores. That means, he has to work for more than one hour non-stop under the temperature of 50 degrees to 60 degrees Celsius.

"Sometimes, the welding helmet was wet all over with sweat, blurring the vision. I have to wipe it from time to time. It is worthwhile for the sake of guaranteeing quality," said Zheng.

Zheng is both a hard worker and a good thinker. That is the deepest impression Zheng Xing has left to people. At the age of 18, he won the third place at a Beijing vocational school skill competition and, with this certificate, he was admitted into the 529 factory.

"The first day when I came to the factory, the then director Lu, who was in charge of my workshop, took me to see the slogan behind us. Every welding point concerns the life of the astronauts. Every process concerns success or failure of manned spacecraft. It was at that time that I realized the heavy responsibilities on our shoulders," said Zheng.

The Shenzhou spacecrafts, Tiangong program and Tianzhou cargo spacecrafts, whose welding was done by Zheng Xing, have been successfully launched.

"I feel very proud to see the products for state major projects coming out of the hands of our workers," said Zheng.