This chapter covers pre-siege rituals, five-element directional sacrifices and cloud divination. It also sets city defense rules, troop hierarchies, wartime resource management and morale-boosting night shouts to guard towns.
This chapter recounts Mozi’s famous mission to stop Chu from attacking Song. He travels ten days to defeat master craftsman Gongshu Ban’s siege engines in a simulated battle, then reveals 300 disciples already guard Song, forcing Chu to abandon the war.