In prison security systems, fencing is the most vulnerable element, yet it must be designed to be "unbreakable quickly." Many projects, when selecting anti-climb fencing, focus only on height, neglecting crucial indicators such as material strength, mesh structure, and time to breach, resulting in enormous investments.To truly achieve "unclimbable, difficult to breach, and controllable even after breach," prison anti-climb systems must be re-understood from three perspectives: material resistance to damage, structural anti-climb design, and the duration of protection against breaches.