Set in the mid-Tang Dynasty from Zhenyuan to Yuanhe years, it tells the legendary story of Lin Yanzhi, a science man who came from time to time, relied on his knowledge to survive in troubled times and improve people's livelihood, and got to know Su Wanniang, the daughter of a prominent Jinzhou family, and stayed together through the storm. The text takes into account both the weight of history and the warmth of emotion, and writes deep affection and perseverance across time and space amidst the disputes in the court and the revolution in people's livelihood.
