One-Armed Road

In the duel between the two heroes on the Nine Heavens Sword Platform, one will win or lose, one will become an immortal, the other will die, and it is unclear who will hold the divine sword. A misunderstanding, a whole family is buried together, where will the one-armed boy go? In a world where swordsmen and qi practitioners coexist, what is the way forward? How to avenge a great revenge? I have a sword and I have a thought! I should hold this world's great road with one arm!