The Legend of Spring and Autumn Craftsmen: Measuring the Sky with a Square Ruler

In the context of the era of the collapse of rituals and music, the thirst for advanced technology in various vassal states reached its peak. The craftsman class played a key role in military innovation. Luban's inventions and creations not only promoted the progress of civilization, but also faced the moral dilemma of being swallowed up by the war machine.