Entering the Qin Dynasty by Mistake: Helping the First Emperor to Unify the World

Four college students from different majors went to the Mausoleum of the First Emperor of Qin at the northern foot of Lishan Mountain. As a result, they accidentally entered a mysterious cave and traveled to the Qin Dynasty. They killed Xu Fu, built trains, gunpowder, movable type printing, etc. Some were engaged in infrastructure construction, some were engaged in medical care to regulate the body of the First Emperor, and there were college students majoring in agriculture to increase food production. When the country became rich and powerful, of course it was about to expand, and someone quietly presented a world map to the First Emperor...