System + no heroine + brotherhood
Ying Che, a graduate student in the Department of Modern History, touched the bronze sword of "Chang'an Lord" in the museum, and traveled to the Qin Dynasty to become the younger brother of the First Emperor. Of course, that was before "Cheng Jiao", the Chang'an Lord in history. Now that I have traveled through time, the historical Chang'an Lord is dead and I have become the new Chang'an Lord. I will become the First Emperor's sword to help him clear everything, even if I am afraid of death, I will not betray him, and I will become his relative so that he will no longer be alone.
