When Jiang Shu returned to Loucheng after traveling, his father actually brought his lover home to live with him, and his lover's son Fu Changqing also moved in with him.
Fu Changqing's external persona is that he is honest and sensible, has excellent grades, and is a "good boy" in the eyes of adults, but Jiang Shu knows what he really is.
Fu Changqing suspected that there was something fishy about his father's death, so he secretly investigated and learned more about it, and discovered that there were chaotic emotions hidden behind it.
Sinister and scheming (Fu Changqing) ⅹ Arrogant and willful (Jiang Shu)
Purpose: Help each other grow and study hard