A history professor from the National People's Congress traveled through time and became Meng Tian's military advisor, and was treated as a spy at the beginning.
He survived by saying "the edict is false". From then on, he helped Su seize the throne, accompanied Meng Tian to guard the Great Wall, and led Li Gan to break into the enemy camp. Xiang Yu wanted to kill him, and the Huns wanted to keep him. Fusu asked him: When will you leave?
Someone blocked three knives for him. Has he gone back?
He changed history, but he could not forget a soldier named Li Gan.
