One Man, One Sword, One World

The old blind man hunched over and held a torch to light up the road ahead: "I just remember that in the long night, there was a green-edged sword like a vast thunder, and the sword energy was like the Yangtze River bursting its embankments. It ran for thousands of miles and killed millions of monsters." "Since then, many long swords have flown from the sky, thousands of miles across the sky, and all the worlds are full of sword energy."