What Does It Mean to Travel Through Ancient Times, but I Know Magic?

Wu Han and Chen You, who were originally taking geography classes in high school, fell asleep while learning the history of the earth. As a result, when they opened their eyes, they traveled to ancient times. At this time, Wu Hua's hand lit up with flames... I would like to declare that I am a dabbler in history. I searched the information online. If there are any mistakes, I welcome corrections.