The Sword Fairy never showed up

Every night, when the dark fog comes, the demons will make a comeback any animal, still life, or person, or corpse will be infected by it and the man holding the reincarnation sword will always come thousands of miles away no one has seen what he looks like I only know the power of his sword, which makes the demons burn up in flames all practitioners in the world call him "Sword Fairy" "I thought he was on the first floor, but I didn't know he was on the fifth floor!" "the old man became a fine willow with 100000 years of cultivation. He was blinded by his clothes before he got close to him."