This novel was called " The Favorite Concubine of Time Travel " by Electric Wires. The male protagonist in the novel was an emperor who had traveled back in time, while the female protagonist was a concubine who had been chosen to enter the palace. They gradually developed feelings for each other, but because of the difference in court life and identity, they experienced many difficulties and tests, but in the end, they came together through common efforts and mutual trust. There were also many plots about palace politics and power struggles in the novel. It was a time-traveling novel with twists and turns and rich emotions.