Xiangdong is from a rural area in eastern Sichuan. After graduating from college, he went to teach at the most remote Xiaba teaching site in Hejiang County. After that, Xiangdong joined the civil service and worked in many departments and places in Hejiang County. Li Yilu was born in a small county in northern Anhui. After graduating from college, he worked in the Lujiang City Economic Investigation Detachment. While investigating the copper mine disaster in Hejiang County, he encountered a man-made car accident and was rescued by Xiangdong. Look at the changes of the times from the perspective of ordinary people to be grateful for this great era.