Three Thousand Cavalry Across the Sky

This is a world where everyone can rely on technology to awaken their natural abilities. The protagonist's awakened talent is time travel. Rely on the powerful biochemical technology of the main world and carry an army with you. The iron hooves are clanking, traveling thousands of miles across rivers and mountains. The iron cavalry is everywhere, and I am the king. In this world, who dares to be superior? Overcome all dissatisfaction, the iron cavalry is the truth.