Xiao Beichentian, the God of War of Dayan and the great general of the country, has a secret that no one knows. In his body lived the soul of a mecha pilot from four thousand years in the future. His illustrious military exploits all stem from a giant intelligent combat mecha named "Xuanwu" that he can summon at any time. When the king is jealous, powerful ministers are surrounded by foreign enemies, and the court is in a state of decay. Xiao Beichentian faced a choice: continue to work for this dying dynasty, or... Let these natives see what it means to be crushed from the future? This is a story about the combination of ancient generals and future technology, on the chessboard of strategy and war.