Chang'an is the romance in Tang poems, the place where all nations came to visit in history books, and the center of the world thousands of years ago. When a piece of ancient jade engraved with "Chang'an Moon" encounters a thunderstorm, and when cultural relic researchers from the Nanjing Museum encounter the prosperous Kaiyuan era, at the fold of time and space, Shu Qingwan's life trajectory is closely intertwined with the lights of this city that never sleeps.