Mark Twain, a great American literary figure, worked on a steamboat on the Mississippi River in his youth, dreaming of becoming a pilot. His brother, Henry, served as a trainee pilot on the same boat. One day, Sam had a dream in which he saw his brother tragically dead, lying in a metal coffin with a red and white floral wreath on his chest. After waking up, he couldn't shake off the haunting memory of that dream. Soon after, Henry met with a boiler explosion and sadly lost his life. Sam kept vigil at the accident site, witnessing his brother's body being laid to rest in a coffin identical to the one from his dream, surrounded by the same floral wreath. This experience left Sam with deep remorse, and the pain haunted him for the rest of his life.