Immortal Sword Cultivator

So what if I peel off the sword bone? Let's see how I can take back what belongs to me! In this world of cultivators, there is an old man holding a green ox, passing through the void and leaving. There is a swordsman riding a donkey who is invincible in the world. There are people stationed in the city to prevent insects and beasts from passing even half a step. There is an elixir master who turns the golden elixir into a dragon and rides on the dragon...