LUCERNE, Switzerland, June 30 (Xinhua) -- Former Chinese astronaut Jing Haipeng and his Swiss counterpart Claude Nicollier held an online exchange with university students from the two countries on Thursday, as part of a Sino-Swiss space science meeting aiming to boost cooperation. Jing Haipeng, head of China's Astronaut Corps, was the first Chinese astronaut to have flown on three missions in crewed spacecrafts Shenzhou 7, Shenzhou 9 and Shenzhou 11, while Claude Nicollier was the first Swiss astronaut to have flown on four space shuttle missions, including two servicing missions to the Hubble Space Telescope. The two shared their rich...