Three Kingdoms: Beginning with Liu Guan and Zhang Taoyuan, They Become Sworn Friends

Chen Yu, a doctor of chemical engineering, traveled through time in a laboratory explosion and fell into the suburbs of Zhuojun before the Yellow Turban Rebellion. After being intercepted by horse thieves and later rescued by Zhang Fei, Chen Yu accidentally broke into Taoyuan. As a result, he formed a sworn alliance with Liu Guanzhang, and became famous among the Han Dynasty by using scientific and technological knowledge that far exceeded ancient times!