Travel Through Time to Become a Demon King and Launch a Plan to Transform the Demon World

In the mainland of China, the most powerful demon king in history overcame the immortal tribulation. For some reason, the news leaked out and was plotted by masters from various sects. His life was in danger when he returned to the demon realm. Lin Hai traveled through time and faced the precarious Demon Realm, which was plagued by internal and external troubles. Unlocked the Demon Realm Transformation System, built a ruined Demon Realm into the No. 1 Supreme Immortal City in all the worlds, and established the Republic of China. ... A man from mainland China said: "Fairy Yunxiao, why did you reject me and humiliate me?" Fairy Yunxiao: "I have already returned to the realm of virtual reality. How can I marry an ugly man like you? Besides, you are only in the stage of becoming a god. You are just a lazy toad who wants to eat swan meat. Are you crazy or am I stupid?" Man: "Don't bully young people who are poor. I have been admitted to Qingbei College in the Demonic City, and the return to the virtual world is just around the corner." Fairy Yunxiao: "What? Brother, I am willing to be my concubine. If you forget my brother, don't despise me." ... See how Lin Hai unified the demon world, solved internal problems, eliminated troubles, established laws internally, and conquered all the heavens and worlds. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.