Chinese mythology, folktales, and literature
This chapter details Mohist counter-tunnel tactics. It uses leather-covered jars to detect digging sounds, dig intercepting tunnels, and deploy mugwort smoke, spears and vinegar to defeat underground enemy assaults.
This chapter details defense tactics for hidden breakout gates. It describes mud-covered wheel barricades, kilns and bellows burning mugwort to create choking smoke, trapping enemy troops that break through these secondary wall openings.