As a contemporary young man with ideals, knowledge and faith, Zhao Lai's biggest wish before time travel was to work as a civil servant in Tokyo, the most prosperous city of the Song Dynasty, with a yard of two rooms, three wives and four concubines, waiting to die. However, after time travel as Zhao Dezhao, Zhao Lai could only silently greet the sky in his heart. Rolling up his sleeves and fighting for his life, just because he doesn't want to see Amitabha Buddha at his best age. In the future of who knows how long, Zhao Lai, oh no, now called Zhao Dezhao, Taizong of the Song Dynasty, Tianhan Khan of the Song Dynasty, fights against Guangyi, accepts Yanyun, defeats the Khitan, destroys Dangxiang, opens up maritime business, and reappears the coming of all nations. "Look, there is the Song Empire where the sun never sets..."