To cover up his status as an illegitimate child, Tong Yunchu goes out of his way to curry favor with the relatives on his "mother's" side of the family. He doesn't know if doing so will earn him the understanding and respect that ordinary people are born with, but at least it might spare him some of their scorn and coldness.
He does this well for over a decade, until he meets his cousin Yu Tai at a family gathering. Yu Tai hoists him up, throws him ten meters away, and viciously says, "A lowlife born of a slut doesn't deserve to set foot in my home." Only then does Tong Yunchu understand that an illegitimate child is an illegitimate child. Even if he sacrifices his dignity and does something so outrageous to curry favor, he still can't...
In fact, both of them are sick and poor people. It feels like they can't lose each other