What is briefly described is the relationship between two trainees, Cai Xinpei and Li Qingru, who are more than just friends. Li Qingru has always had a secret admiration for Cai Xinpei. Cai Xinpei's brother Cai Jie fell in love with Li Qingru at first sight after he returned from serving in the army. Feng Yimo is the childhood friend of the two Cai brothers and sisters, and Feng Yimo has admired Cai Jie since childhood.
Intention: It is human nature to love but not be able to get it