Chéngshǒu piān 城守篇

‘the defence chapters’, a group of chapters of the Mòzǐ devoted to city defence, siege warfare, logistics, and military engineering. Although often treated as technical manuals, they are also notable for their systematic approach to practical reasoning. The chapters analyse military problems through classification of threats, conditional response, information gathering, and coordinated action. Particularly striking is their treatment of the defended city as an information system in which survival depends on detecting hidden dangers, transmitting reliable signals, and integrating people, resources, and institutions into a coherent defensive order. They therefore provide some of the clearest examples in the Mòzǐ of reasoning embodied in procedure, organisation, and technical expertise rather than explicit philosophical argument.#text