At the end of the Northern Song Dynasty, Mo Yan, the last craftsman of the Mohist family, holds the only complete blueprint of the Bianliang city defense mechanism. In the desperate situation of being pursued by the Zhuhe faction, betrayed by his mentor, and coveted by the Jin army, he relies on hard-core mechanism skills to break through the deadlock, and finally delivers the blueprint to the border, and cleverly reverses the crisis of Bianliang. This is a passionate epic.
