This book is a realistic novel focusing on the living conditions of middle-aged men. It truly records the daily rush and persistence of a middle-aged deliveryman. The protagonist used to be a restaurant owner, but after the epidemic, he switched to a job as a delivery boy. The story does not include an earth-shattering counterattack, but only truly records the daily life of a middle-aged deliveryman running orders, his struggle in the wind and rain, his sweating under the scorching sun, and his lonely back under the street lamp. The middle-aged man forges ahead with responsibility and dignity, and supports the burden of the family with perseverance.