BEIJING, June 21 (Xinhua) -- Three astronauts from the Shenzhou-13 crewed mission were awarded medals for their service to China's space endeavors on Tuesday.Zhai Zhigang, the mission commander, and Wang Yaping, the first female on China's space station, were honored with second-class aerospace achievement medals, while Ye Guangfu received a third-class medal and the honorary title "heroic astronaut."