In No. 9 Middle School, Su Lingan, a poor student, met Gu Suran, the top scorer in the high school entrance examination, and they were admitted to Peking University together. Later, Gu Siran became a teacher of Yimin, and Su Lingan became a people's policeman who punished evil and promoted good. Su Lingan lifted Gu Siran who fell into the abyss, and Gu Siran was no longer lonely.
Intention: youth, redemption