I Was Demoted to a Fief at the Beginning, but I Have the Supreme Conquest System

Ye Xuan traveled to the fantasy world, became the seventh prince of the Eternal Dynasty, and obtained the supreme conquest system. I was demoted to a fief at the beginning, but it was okay, I have a system. The prince's traitorous ministers harmed me, it's okay, I have a system. If an enemy country invades, it's okay, I have a system. I heard that you are the invincible supreme being in all realms. It's okay, I have a system. I heard that you are an immortal holy land that spans all heavens and realms. It's okay, I have a system. ······ Ye Xuan relied on the supreme conquest system to conquer the heavens, conquer all realms, and create an immortal dynasty. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.