" Using a lifetime to exchange for your first encounter " was not a series of fireworks and love that could topple cities. It was a time-travel novel called " Startling Step by Step " written by Tong Hua. As for the ending, it was a classic story about the protagonist, the 14th Prince, who had returned to the modern world after completing his father's last wish, and the emotional entanglement between him and the modern girl, Ruo Yu. Although the ending of the story was a little sad, it was full of deep thoughts and philosophy.