Page Ten
Header: Illustrations of Armaments: Regulations for Fort Defense, Part 1

Illustration of the Corner Terrace

Previously omitted original: 舊失 jiushi; literally "old loss," likely referring to this specific design being missing from older editions or earlier fortification plans. Both walls are reinforced with earth Shooting lanes are all angled

Corner Terrace original: 角臺 jiaotai, a defensive platform situated at the corner of a city wall to provide flanking fire., Wall original: 垣 yuan, referring specifically to the defensive ramparts or enclosures., Shooting Lane original: 矢道 shidao, literally "arrow path," the designated line of fire for archers or crossbowmen.

Current Regulations

Attached to the northern wall, not the western wall Attached to the eastern wall, not the northern wall

The curtain original: 暮 mu; likely a transcription error for 幕 mu, meaning "curtain wall." turns inward while the straight sections face outward Following both walls, projecting straight out

The diagram provided here illustrates the plan view of a fortification. It shows a central gatehouse protected by a system of crenellated walls. The annotations specify the "current system" for how individual wall sections must be joined—specifically how the northern and eastern walls should intersect to eliminate blind spots. It highlights the geometric precision required to ensure that archers on the corner terrace can cover the entire perimeter.

Treatise on Armament Technology, Volume 114

Military Resources: Defense, Covenant for Forts, Part 1

In the past, people failed to weigh the strength and matching of the gates, saying they did not know the risks; this is indeed the case.

Iron plating is extremely thin and cannot withstand intense scorching. As the iron heats up, the wooden core of the gate catches fire; destroying it this way requires little effort from an attacker. Furthermore, if there is no overhanging gallery original: 懸樓 xuanlou, a wooden structure projecting from the wall to allow defenders to shoot downward at the base of the gate. above the gate to strike the enemy from a distance, and no drainage troughs original: 漏槽 loucao, channels used to pour water or sand down to extinguish fires at the gate. to pour water down, the defense will surely fail.