In 880 AD, when Huang Chao's cavalry crossed Chang'an, modern history student Li Xuance accidentally traveled through time, and the Xuanwu birthmark on his forehead suddenly awakened - he was actually Li Shimin's illegitimate son living among the people. With the knowledge of science and technology in the 21st century and the profound memory of the decline and fall of the late Tang Dynasty, this secret royal descendant who holds the "Tiance Black Iron Order" embarks on the road to change his destiny in the troubled times of eunuchs' monopoly and separatist feudal towns.
He held a wolf hair in his left hand to innovate the government: he improved papermaking to break the knowledge monopoly of the clans, and founded the "Zhenguan New Newspaper" to spread modern political and economic concepts; he held gunpowder in his right hand to put down the rebellion: 800 black armored cavalry equipped with black powder and thunder, blasted the rebels in the three towns of Heshuo into powder. When the female leader of the Sogdian merchant group brought the "Chart of All Nations", Li Xuance pointed his sword at the stars and the sea: "The glory of the Tang Dynasty should not be trapped in Chang'an. I want the Suzaku Flag to be planted all over the seven seas!"
However, the "Yiluohe" dead soldiers controlled by Quan Yuanzhen are following closely, and the descendants of An Lushan are rebuilding the "Dayan" Empire in the Western Regions. What's even more fatal is that every historical intervention of the time traveler triggers terrifying time and space rifts... In this ultimate collision between modern civilization and ancient laws, can Li Xuance find a balance between dominating the world and protecting his true heart?
