Astronaut Liu Wang salutes at a press conference in South China's Hong Kong, August 10, 2012. A 40-plus-member delegation of Tiangong-1/Shenzhou-9 Manned Space Docking and Rendezvous Mission, including three astronauts who had fulfilled China's first manned space docking mission this June, arrived at Hong Kong Friday for a four-day visit. Photo: Xinhua
Astronauts, key commanders and designers of China's manned space program attend a press conference in South China's Hong Kong, August 10, 2012. A 40-plus-member delegation of Tiangong-1/Shenzhou-9 Manned Space Docking and Rendezvous Mission, including three astronauts who had fulfilled China's first manned space docking mission this June, arrived at Hong Kong Friday for a four-day visit. Photo: Xinhua
Some members of the Delegation of Tiangong-1/Shenzhou-9 Manned Space Docking and Rendezvous Mission pose for a group photo at a press conference in South China's Hong Kong, August 10, 2012. A 40-plus-member delegation, including three astronauts who had fulfilled China's first manned space docking mission this June, arrived at Hong Kong Friday for a four-day visit. Photo: Xinhua
Niu Hongguang, deputy commander-in-chief of China's manned space program, attends a press conference in South China's Hong Kong, August 10, 2012. A 40-plus-member delegation of Tiangong-1/Shenzhou-9 Manned Space Docking and Rendezvous Mission, including three astronauts who had fulfilled China's first manned space docking mission this June, arrived at Hong Kong Friday for a four-day visit. Photo: Xinhua
Zhou Jianping, designer-in-chief of China's manned space program, attends a press conference in South China's Hong Kong, August 10, 2012. A 40-plus-member delegation of Tiangong-1/Shenzhou-9 Manned Space Docking and Rendezvous Mission, including three astronauts who had fulfilled China's first manned space docking mission this June, arrived at Hong Kong Friday for a four-day visit. Photo: Xinhua
China's first woman astronaut Liu Yang salutes at a press conference in South China's Hong Kong, August 10, 2012. A 40-plus-member delegation of Tiangong-1/Shenzhou-9 Manned Space Docking and Rendezvous Mission, including three astronauts who had fulfilled China's first manned space docking mission this June, arrived at Hong Kong Friday for a four-day visit. Photo: Xinhua
Astronaut Jing Haipeng salutes at a press conference in South China's Hong Kong, August 10, 2012. A 40-plus-member delegation of Tiangong-1/Shenzhou-9 Manned Space Docking and Rendezvous Mission, including three astronauts who had fulfilled China's first manned space docking mission this June, arrived at Hong Kong Friday for a four-day visit. Photo: Xinhua