The Start Was Ruined, I Relied on the System to Become the Supreme Human Emperor

I, Qin Xuan, traveled through time and became the sixth prince of the Great Qin Dynasty, but at the Apocalypse Ceremony, I was tested for the lowest level of Huang-level low-grade spiritual root, and became a royal disgrace. The eldest prince falsely accused me of stealing the national treasure, the second prince wanted to put me to death, and even my biological father personally deposed me. On the verge of death, I awakened the Supreme Human Emperor System and obtained the emperor-level spiritual roots and Nascent Soul cultivation. The second prince wants to poison me? Kill! The Fourth Prince wants to steal the Holy Medicine Spirit Body that I saved? Kill it with one sword! The eldest prince wants to seize the throne? The dragon chair is for you to sit on, let's see if you can sit firmly! When I return holding the Human Emperor Sword, the entire continental dynasty will tremble for me. And this is just the beginning of my reign over the world...