The beauty of a moment is like fireworks blooming in the night sky, but the dazzling light is too short-lived and cannot be retained. After shining, it returns to the dark night sky. The motivation for writing this article was listening to the song "Swallowtail Butterfly". Many messy images passed through my mind. I had the urge to write it down and write about a flame-like and destructive love. It's just that the writing process deviated from the original intention a little, and the ending was HE. In fact, in the original concept, the ending was BE. So this time I took advantage of the opportunity to revise it and re-write the ending as it was when I first conceived it. It's still the love between T and T, recognize the subtle points.