Believe in Science? My Girlfriend Has Become an Immortal!

On a rainy night, Shen He rescued a woman who passed out in front of her building. She thought it was a romantic encounter story, but the woman turned out to be a mentally ill man who claimed to be an immortal! "How about you fly with your sword and let me see?" Please, what age are we in, we must believe in science! Until one day... His wife really took off...