The "behind-the-scenes" astronauts on the Tongguling Ridge in Wenchang, Hainan: willing to be the last barrier to guard the flight of rockets. "Post-90s" Lin Menghan is the equipment monitoring operator in the security control team, mainly responsible for monitoring the operation status of the entire set of equipment.
"Newcomer" Song Wenjun is a servo operator who still remembers the nervousness he felt 3 years ago when he participated in launch mission for first time.