A fantasy dream of the Tang Dynasty from which one cannot wake up. He is a science and engineering genius trapped in ancient times. He uses the knowledge of objects as an edge to survive on the chessboard of power. Starting with a solar eclipse and relying on crossbows, he set off not only a technological revolution, but also a turmoil of the times. When the affection of the daughter of the left prime minister, the protection of the eldest princess, and the pursuit of the mysterious and talented woman are intertwined, can he find his way back among conspiracy and love?
