Fantasy: Start as an Emperor and Summon All the Gods and Demons

Su Ye's soul traveled to a world where gods and demons coexisted and thousands of races arose. He started as the ninth prince of the Great Xia Dynasty and was bound to the most powerful emperor system. At that time, Great Xia was invaded by demons and had to cede territory to pay compensation and end the war with his relatives. After thousands of years of bullying and massacre, no one in the court resisted, and instead they suppressed the opposing forces of the dynasty. The demons are tyrannical and the father is fatuous, yet they actually surrendered to the vassal country under the threat of the demons. When Su Ye heard about it, he slaughtered his subjects in anger, killed the emperor and usurped the throne, declared war on the demon clan, and promoted the power of the Great Xia.