Turns Out I'm a Genius

I, Li Buping, have been flying in the starry sky for tens of thousands of years. Although I have countless magic weapons, the only ones I can use are only one move, one style, and one sword. One move of sword energy is like a rainbow, the cold light dominates the nineteen states, slays demons and monsters, one move of the sword enters the starry sky, the sword energy flies ninety thousand miles away, kills gods and immortals, and breaks all laws with one sword. Can you handle it? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.