In the Tang Dynasty, I Am the Emperor's Master

Xu Ran traveled to the Tang Dynasty and obtained the strongest imperial teacher system. He had no problem teaching Li Er some ways of governing the country and some plans for people's livelihood. Fang Xuanling, Du Ruhui, and Wei Zheng: The imperial master's martial arts skills are unparalleled throughout the ages. They are the only masters of all time who can't be matched by us! Li Jing, Li Ji, and Cheng Yaojin: The emperor's troops were unpredictable, swallowing up the Turks and conquering the Western Regions, destroying Tubo, Goryeo, and Tuyuhun, and allowing the Tang Dynasty to dominate the world. They are truly the best in history! Li Er: The emperor's master has made great achievements for a long time, but I am far behind. I am afraid that future generations will only know the emperor's master and not me, Li Shimin... Xu Ran: History is dancing in the palm of my hand, and everything is at my feet! There is only one person in the world, Xu Ran! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.