Reborn as a Fool, From the Start I Slaughtered My Entire Family

No System, no female lead, multiple partners, business and farming, cultivation, human nature, overthrowing a dynasty, resistance, cold-blooded, becoming king, no mindless plot, and villains who aren't idiots. Betrayed by his wife, who conspired with her lover, he learns endlessly across an infinite expanse of time and is reincarnated into the body of an even more unfortunate boy. From the start, he kills his entire family and avenges his parents. Using modern knowledge, he launches a business in the cultivation world, only for the dynasty to crush him. By a twist of fate, he practices both martial arts and cultivation, slaughtering the great clans and the dynasty for the sake of one question: "Injustice? You're lowly commoners. What right have you to speak of fairness?" Let the mansions feast on meat and wine while the poor freeze to death in the streets no more! A butcher in the cultivation world, a savior to mortals. Kill! Kill until they tremble with fear! Kill until they live in terror! But in the end... A nameless sorrow, a grievance unresolved, vast Heavens above! Come, then. Life or death? Come, let us sing out our final dignity with our lives! There is no turning back. Only a fight to the death can win us a chance to survive!