He transmigrates as Fang Xuanling’s most useless illegitimate son. Fang Yiyu, a doctorate in engineering, holds the technological blueprint of the early Tang in his hands, yet draws assassination attempts from the Five Great Clans. As the golden age of Zhenguan ignites the spark of industry a century ahead of schedule, he is forced to make a choice on the night Li Chengqian rebels. What the history books never recorded was his century-long entanglement with three women among gears and poetry scrolls…
