Su Jin, a doctor of chemistry, traveled through time and became Yang Yuyao, the cousin of Concubine Yang. It was the golden age of Tianbao and there were turbulent undercurrents. In order to survive the Anshi Rebellion, she used modern knowledge to improve cosmetics, secretly brew spirits, and secretly research firearms. She dealt with the favor of a noble concubine, the strife of powerful ministers, and the recruitment of the prince. From a secret chess player in the boudoir to a counselor in troubled times, can she reverse the fate of herself and the country in the huge waves of history?
