Meng Xing proposed to draw lots to decide whether to go to Shou Jingyuan to help retired faculty and staff and keep vigil. Meng Xing, Qi Mu, An Yu, Su Chengcheng, Lu Man, and He Miao were selected.After being divided into groups, they each faced different challenges, such as Meng Xing and He Miao being strictly excluded, An Yu and Lu Man being mistakenly identified, and Qi Mu and Su Chengcheng aware of Teacher Xiang's concerns.At night, Meng Xing called Qi Mu Anyu because of an emergency, but unexpectedly found Teacher Xiang standing alone outside Shoujing Garden.They asked Director Liang and learned that Teacher Xiang wanted to take another look at the asteroid for his wife.For this reason, Qi Mu repaired an astronomical telescope and worked with Su Chengcheng to realize Teacher Xiang's dream.