He Was in Da Qin and Led His Army to Open up Foreign Lands.

Lu Chen has a time and space door that leads to Qin, Han, Tang, Song, Ming, and a newly discovered magical world. He has been operating in the Five Dynasties for many years. He is the "Mr. Mo Ju" in the mouth of Ying Zheng and the reincarnation of an immortal in the eyes of the world - his appearance is not old and his life span is as long as the sky. But he found that the ancient power alone could not defeat the alien world. The mage burns a city with a wave of his hand, and the dragon annihilates an army with one blow. He needs modern technology. But in modern times, he is just a freshly graduated college student with zero influence, and no one is allowed to bring him a good knife. So Lu Chen did something that no one expected - The Qin army changed into modern alloy armor and stepped into another world. The First Emperor's order had only one word: "Open."