The Strongest Upgrade System

After the apocalypse on Earth, with the help of the Pangu Dimension, Li Siji transmigrates into the body of a prince who was assassinated for being born to a concubine. Aided by the most powerful System in the Pangu Dimension, Li Siji hones his bloodline, cultivates powerful techniques, and slays cultivators, surging forward all the way. In his eyes, there are only two kinds of people: those who submit to him, and the dead.