During and shortly after the revolution. They fkd around afterwards, father got locked up and family got sent to the rural countryside for reeducation. After serving the prison sentence, his father did eventually redeem himself but it left a mark. This experience in adolescence is supposedly what caused Xi to develop a hard-line reder-than-red Marxist-Leninist world view and aversion to corruption when others he grew up with fell down the liberal rabbit hole. This is at least what his CIA dossier outlined as family background and early life.

One of the hardest roasts in history, an exchange between Nikita Khrushchev and Zhou Enlai:

Nikita Khrushchev: The difference between the Soviet Union and China is that I rose to power from the peasant class, whereas you came from the privileged Mandarin class.

Zhou Enlai: True. But there is this similarity. Each of us is a traitor to his class.

His Dad was, but fell out of favor. Xi grew up in a cave and struggled to join the party.

His later political career almost certainly benefitted from his family connections (after his father was rehabilitated) but he’d also experienced real working-class struggle during childhood.