Illustration of the Formation Compound

Formation Compound original: 陣院 zhenyuan
Illustration original: 圖 tu

Former Flawed Design

Current Standard Design

Still using reeds

and mud to reinforce

This page features a technical architectural diagram comparing two methods of military masonry. The Formation Compound refers to the fortified barracks or enclosed staging areas within a larger defensive complex. In the Ming Dynasty, especially under the reforms of generals like Qi Jiguang, military manuals began to emphasize "Current Systems" (standardized designs) over "Former Failures" (older, less stable building techniques). The text mentions reinforcing the structure with reeds and mud original: 茅泥 maoni. This refers to a technique similar to wattle and daub, used here to fill or bind the interior of brick walls. By using a mixture of organic fibers (reeds or thatch) and mud/plaster, the engineers could create a more flexible and fire-resistant core that helped the wall withstand the vibration of heavy artillery or attempts by an enemy to undermine the foundation.