In Space - Recent (CCTV - No access Chinese mainland)
1. Earth
2. Spacecraft in space
3. Animation of space station, spacecraft in orbit
4. Various of astronauts working in capsule

Beijing, China - Recent (CCTV - No access Chinese mainland)
5. SOUNDBITE (Chinese) Xu Chong, director, astronaut medical monitoring and support department, China Astronaut Research and Training Center (ending with shot 6):
"When the astronauts return and land on the Earth, the biggest challenge would be posed on their cardiovascular system, who could suffer decreased or poor orthostatic tolerance. Orthostatic intolerance occurs when the astronaut's blood moves downwards to the lower body after being back in Earth's gravity, which will lead to insufficient blood flow to the brain and thus result in fainting."

In Space - Recent (CCTV - No access Chinese mainland)
6. Various of astronauts working in capsule
7. Various of space station, spacecraft in orbit
8. Astronauts working

Beijing, China - Recent (CCTV - No access Chinese mainland)
9. SOUNDBITE (Chinese) Zhao Jing, associate research fellow, astronaut selection and training department, China Astronaut Research and Training Center (ending with shot 10):
"We had actually worked out a whole exercise program before they entered space, including plans covering the early stage and middle stage in orbit, as well as the return stage. The exercise equipment includes treadmills, bicycles and chest expanders. But there were differences in exercise intensity, prescription and time. The exercise intensity was gradually increased."

In Space - Recent (CCTV - No access Chinese mainland)
10. Various of astronauts doing exercise in capsule
11. Photo of astronauts in capsule

Beijing, China - Recent (CCTV - No access Chinese mainland)
12. SOUNDBITE (Chinese) Xu Chong, director, astronaut medical monitoring and support department, China Astronaut Research and Training Center (ending with shot 13):
"The astronauts need to restore their motor ability, cardiopulmonary functions, balance, and some fine movements after they returned to Earth and readjust to gravity. They will go through a three-phase systematic recovery process lasting six months, two months after which the astronauts can participate in some regular fitness training."

In Space - Recent (CCTV - No access Chinese mainland)
13. Various of astronauts doing exercise in capsule
14. Astronaut helping another astronaut fix spacesuit
15. Astronauts doing exercise

Beijing, China - Recent (CCTV - No access Chinese mainland)
16. SOUNDBITE (Chinese) Zhao Jing, associate research fellow, astronaut selection and training department, China Astronaut Research and Training Center (starting with shot 15):
"First, we will guide the astronauts to reconnect with the society. We also provided substantial psychological support during their time in orbit. We uploaded news broadcast and (reports of) hot-spot issues every day (to keep them informed). We will provide compatibility training for the astronauts to facilitate their interaction with people and help them fit into society as soon as possible."

In Space - Recent (CCTV - No access Chinese mainland)
17. Various of space station, spacecraft in orbit

Three Chinese astronauts, the first sent to orbit for space station construction, will readjust to gravity and life on Earth after having completed their three-month mission and returned to Earth safely on Friday.

The return capsule of the Shenzhou-12 manned spaceship, carrying astronauts Nie Haisheng, Liu Boming and Tang Hongbo, touched down at the Dongfeng landing site in north China's Inner Mongolia Autonomous Region, according to the China Manned Space Agency (CMSA).

The three astronauts lived and worked in the space station core module Tianhe for 90 days, the longest stay in space by Chinese astronauts.

According to experts at the China Astronaut Research and Training Center, such a long stay in space can be a testing challenge for the astronauts' physiological functions, cardiovascular system, musculoskeletal system and balance system.

"When the astronauts return and land on the Earth, the biggest challenge would be posed on their cardiovascular system, who could suffer decreased or poor orthostatic tolerance. Orthostatic intolerance occurs when the astronaut's blood moves downwards to the lower body after being back in Earth's gravity, which will lead to insufficient blood flow to the brain and thus result in fainting," said Xu Chong, director of the astronaut medical monitoring and support department under the China Astronaut Research and Training Center.

The longer the astronauts stay in space, the harder it becomes for them to readjust to gravity back on Earth.

After landing safely and leaving the capsule, the astronauts were seated in reclining chairs to allow them time to gradually readjust to the Earth's gravity.

In fact, the astronauts also carried out preparations for their readjustment back in the capsule before the landing.

"We had actually worked out a whole exercise program before they entered space, including plans covering the early stage and middle stage in orbit, as well as the return stage. The exercise equipment includes treadmills, bicycles and chest expanders. But there were differences in exercise intensity, prescription and time. The exercise intensity was gradually increased," said Zhao Jing, associate research fellow with the astronaut selection and training department under the China Astronaut Research and Training Center.

After returning to earth, the three astronauts will undergo recovery training for half a year.

"The astronauts need to restore their motor ability, cardiopulmonary functions, balance, and some fine movements after they returned to Earth and readjust to gravity. They will go through a three-phase systematic recovery process lasting six months, two months after which the astronauts can participate in some regular fitness training," said Xu Chong.

In addition to physical recuperation, astronauts will also receive guidance regarding psychological recovery.

"First, we will guide the astronauts to reconnect with the society. We also provided substantial psychological support during their time in orbit. We uploaded news broadcast and (reports of) hot-spot issues every day (to keep them informed). We will provide compatibility training for the astronauts to facilitate their interaction with people and help them fit into society as soon as possible," said Zhao Jing.

The three Chinese astronauts were sent into space aboard Shenzhou-12 and entered Tianhe on June 17. The crew carried out extravehicular activities twice over the past 90 days.