Great Qin: I Am the Emperor

He transmigrates to the middle of the Warring States period and becomes Ying Si, ruler of Qin and great-grandfather of Qin Shi Huang. With the "King" System, he can draw heroes, exchange for equipment, and summon super soldiers.

The six states unite to attack Qin, and drawing heroes can't protect all his subjects? Then he'll summon crystal defense towers and line the border with them, so none of the invaders make it back alive.

"Your Majesty, here are the Hu sisters and Yan Lingji you requested. The defeated state is willing to cede another fifteen cities. We humbly beg your nation to cease hostilities." The ruler of Baiyue.

"Your Majesty, are you satisfied with the performance of Da Siming and Feiyan?" Donghuang Taiyi.

To save his life, the King of Han sends Honglian to form an alliance with Qin. Afraid his kingdom will be destroyed, the King of Yan sends Liji to seal a marriage pact.

See how the protagonist unites all six realms and makes Qin the undisputed ruler of the world!

This novel and its characters are entirely fictional. Any similarities are purely coincidental. Do not imitate.