Gōngshū 公輸

 A chapter recounting the famous confrontation between Mòzǐ and the engineer Gōngshū Bān over the proposed Chǔ attack on Sòng. The discussion moves from moral criticism of aggression to technical demonstration and military planning, showing how argument can extend beyond speech into action. It is one of the clearest examples in the Mòzǐ of persuasion, engineering expertise, and strategic reasoning working together.