Being Demoted to the North, He Became the Strongest Emperor

Time travel at the beginning, and the structure at the beginning is on death row! My father was put under house arrest for rescuing me. My uncle advised me to forget my hatred and be a peaceful king. Little do they know, I carry a treasure trove of modern knowledge - land reclamation, infrastructure, firearms, tanks... The blueprint of a complete industrial system is in my mind! After three years of dormancy, he suddenly shocked the world! When my modern steel torrent synthetic brigade ran over the territory of the demon clan, all the demons bowed their heads. The former noble demon princess knelt down and begged to be my concubine. In the Jinluan Palace, the emperor in the dragon chair was trembling with regret - this supreme god of murder who had crushed the demon clan was actually the prisoner he had personally released the tiger back to the mountain! I stepped onto the jade steps, and my voice resounded throughout the hall: "Your Majesty, it's time for you to abdicate."