You Favored Your Adopted Son! Now That I'm Invincible, Do You Regret It?

[No Female Lead + Myriad Worlds + Decisive and Ruthless + Villain + Master of All Trades] In the Desolate Heaven World, countless races coexist, and martial arts reign supreme! Lu Yuan was the eldest legitimate son of the Lu family, lost outside the family for eighteen years. After returning, he thought he would finally enjoy the warmth of family affection. But because he lacked talent for cultivation, his parents, whom he had not seen in eighteen years, rejected him. In a world where martial arts reign supreme, those with poor aptitude are worth less than dogs. And during the eighteen years Lu Yuan was away, his parents had adopted a son who shone like the blazing sun. By comparison, Lu Yuan never received his parents' love. Instead, disdain, scolding, and beatings came one after another, and his treatment in the Lu family was worse than that of a beggar on the roadside. At the height of his despair, the All-Trades System awakened, and Lu Yuan resolutely severed ties with his parents. Starting out as a lowly alchemist, he mastered pill refining, weapon forging, talisman crafting, and formations. Lu Yuan gradually became proficient in every craft and mastered them all, taking each to its absolute limit. Fist arts, saber techniques, swordsmanship, and spear arts: Lu Yuan attained sainthood in them all. Sainthood through the myriad paths, the strongest across all worlds! When he looked back, he discovered that the Lu family had long since vanished into the river of history. [The synopsis does not do it justice. Please read the story itself.]