In her previous life, Su Wan was a skilled female artisan specializing in construction techniques. After being falsely accused, she was exiled to the frontier. Upon being reborn, she became a woman sentenced to exile. Refusing the deliberate advances of others, she chose to make a living alongside Huo Xiao, a hardworking and courageous soldier. Drawing on her exceptional architectural knowledge, Su Wan improved house-building techniques and cleverly applied rammed-earth construction to reinforce homes, protecting their inhabitants through snowstorms. She also devised ingenious ways to help her neighbors, earning their trust and respect. She studied the art of firing blue bricks and built sturdy watchtowers to defend against foreign enemies. Her outstanding construction skills earned the recognition of military commanders. Eventually entrusted with repairing the frontier city walls, she established clear working principles and revolutionized construction methods to strengthen the defenses. Through her efforts, the frontier pass successfully held its ground and repelled the invading enemy.