She Divorced a Secret Billionaire

Protagonist sells vegetables. He finds wife with lover, villain. She demands divorce; villain humiliates and assaults him. Injured, he contacts sons-in-law. At banquet, wife and villain humiliate him, but sons-in-law intervene, defending him and exposing them. He decides to divorce her. Villain hires thugs to attack him. Sons-in-law bankrupt wife's family business. Three daughters return. He divorces wife, reunites with daughters and sons-in-law.