This article tells the story that the author left Nanjing for Peking University. His father sent him to Pukou Station to take care of him and buy him oranges. What impressed the author most was that his father was on the platform when he bought him oranges.
Climb up and down from behind. With simple words, the author expresses his father's love for his children deeply, delicately and sincerely, and shows his care and love from ordinary events.