Astronauts of China's Shenzhou-10 mission Nie Haisheng (2nd R back), Zhang Xiaoguang (1st R back) and Wang Yaping (3rd R back) are present at a press conference in Beijing, China, July 11, 2013. The three astronauts have completed their medical quarantine and are in good conditions, according to official sources. [Photo/Chinanews.com] 

Astronauts of China's Shenzhou-10 mission Nie Haisheng (2nd R back), Zhang Xiaoguang (1st R back) and Wang Yaping (3rd R back) are present at a press conference in Beijing, China, July 11, 2013. The three astronauts have completed their medical quarantine and are in good conditions, according to official sources. [Photo/Chinanews.com] 

Astronauts of China's Shenzhou-10 mission Nie Haisheng (2nd R back), Zhang Xiaoguang (1st R back) and Wang Yaping (3rd R back) are present at a press conference in Beijing, China, July 11, 2013. The three astronauts have completed their medical quarantine and are in good conditions, according to official sources. [Photo/Chinanews.com] 

Astronauts of China's Shenzhou-10 mission Nie Haisheng (2nd R back), Zhang Xiaoguang (1st R back) and Wang Yaping (3rd R back) are present at a press conference in Beijing, China, July 11, 2013. The three astronauts have completed their medical quarantine and are in good conditions, according to official sources. [Photo/Chinanews.com] 

Astronauts of China's Shenzhou-10 mission Nie Haisheng (2nd R back), Zhang Xiaoguang (1st R back) and Wang Yaping (3rd R back) are present at a press conference in Beijing, China, July 11, 2013. The three astronauts have completed their medical quarantine and are in good conditions, according to official sources. [Photo/Xinhua] 

Astronauts of China's Shenzhou-10 mission Nie Haisheng, Zhang Xiaoguang and Wang Yaping are present at a press conference in Beijing, China, July 11, 2013. The three astronauts have completed their medical quarantine and are in good conditions, according to official sources. [Photo/Xinhua] 

Astronauts of China's Shenzhou-10 mission Nie Haisheng, Zhang Xiaoguang and Wang Yaping are present at a press conference in Beijing, China, July 11, 2013. The three astronauts have completed their medical quarantine and are in good conditions, according to official sources. [Photo/Xinhua] 

Astronauts of China's Shenzhou-10 mission Nie Haisheng, Zhang Xiaoguang and Wang Yaping are present at a press conference in Beijing, China, July 11, 2013. The three astronauts have completed their medical quarantine and are in good conditions, according to official sources. [Photo/Xinhua] 

Astronauts of China's Shenzhou-10 mission Nie Haisheng, Zhang Xiaoguang and Wang Yaping are present at a press conference in Beijing, China, July 11, 2013. The three astronauts have completed their medical quarantine and are in good conditions, according to official sources. [Photo/Xinhua] 

Astronauts of China's Shenzhou-10 mission Nie Haisheng, Zhang Xiaoguang and Wang Yaping are present at a press conference in Beijing, China, July 11, 2013. The three astronauts have completed their medical quarantine and are in good conditions, according to official sources. [Photo/Xinhua]