A Butcher? I'm Unbeatable

Xavier has spent ten years slaughtering pigs for a living. He has a pendant and a name, and when he decides to go looking for the family the pendant belongs to, he finds his sister first and she brings him home. His mother is there. His father is there too, and takes one look at a butcher with no dantian and refuses to call him a son, and will not let the mother acknowledge him either. The rival Gao clan picks that moment to come to the door. The family has no one who can hold them off. His mother says out loud, in front of everyone, that he is her child. Xavier picks up the butcher's knife he has been using for a decade. The ten years of cutting were the training, and the sword technique he inherited comes back with the first swing. He goes after the Gao men and after Zhou Yan, who set the whole thing up from behind them.