Time and space intersect: Su Mingyu, the daughter of a jewelry group, unexpectedly travels back to the early years of Emperor Wu of the Han Dynasty. She discovers Liu Ji, the deposed prince who looks the same as her fiancé, on the outskirts of Chang'an, starting a tangle of fates.
Breakthrough in science and technology: Use modern knowledge to create flintlocks, black powder and telescopes, establish a cross-era arsenal in a secret weapons workshop on the banks of the Weishui River, and complete military innovation within three months.
