Li Yu, a PhD in engineering, transmigrates to the ninth year of the Wude era and becomes the magistrate of Jingyang County, where he binds himself to the Civilization Advancement System. It is just before the Xuanwu Gate Incident, with Turkic forces at the Wei River. Faced with famine-stricken lands and barbarian tribes lying in wait, Li Yu uses modern technology to turn things around:
- He ends famine with hybrid rice.
- He saves Empress Zhangsun with homemade penicillin.
- He forges Tang sabers using modular steelmaking.
- He revolutionizes canal transport with a basic internal combustion engine.
When Li Shimin sees electric lights illuminating Chang'an, Persian envoys beg for the formula for cement, and Tibetan nobles scramble to buy glass mirrors, all of the Tang Empire races toward a new golden age of Zhenguan in the midst of Li Yu’s technological storm!
