The first step in college life is to join the army. Huo Ling, who loves military life, did well in the following year. Don't be rated as "Five Good Soldiers". Not long after returning to school, all the teachers and students of Harbin Military Industry switched jobs on the spot. Huo Ling is full of regrets. She just put on a hot military uniform and can only put it in a box. The Cultural Revolution began. Taking advantage of the national competition, Huo Ling made an appointment with her cousin to visit the place where her parents had fought all the way from Jinan to Huangxian.

This "Long March" made Huo Ling understand her parents' hardships and deepened her ideal and belief of dedicating herself to national defense. She filled in three "join the army" on the graduation assignment form. However, because his father had been knocked down at that time, Huo Ling's joining the army met with resistance. With the help of his father's old comrades-in-arms, Huo Ling finally came to the East China Sea Fleet with his classmates.