Ling Buyu, the descendant of the declining machine family, disguised himself as a man and was admitted to the "Shenji Camp", the highest technical institution of the Dajing Dynasty, in order to clear his father's grievances and restore the family's glory. Here, what determines the strength of a country is not soldiers and horses, but giant humanoid weapons driven by gears, hinges, and mortise and tenon structures—mechanical armors. Ling Buyu relied on his ideas of mechanism arts far ahead of his times and his family's secret craftsmanship. He started as a marginalized apprentice, repaired broken mechas, designed new "Qingluan" mechas, thwarted the conspiracy of rival workshops, and gradually carved his way through the all-male workplace bureaucracy. During this period, she met Ye Xuan, the enemy prince who was dormant in the capital as a hostage. The two began to test and exploit each other, and eventually became each other's only trust. When a dusty old case is uncovered, the father's grievances are pointed at the highest authority in the court, and the border war is in danger because of the enemy's new mecha. Ling Buyu personally built the unparalleled "Zhulong" mecha, which was in harmony with Ye Xuan's inner and outer, clearing the emperor from the inside, and determining the world from the outside. In the end, as a female streamer, he was named the "Working Saint" of Dajing, and became a legend who controlled the lifeline of a country's military.
