C899 Confinement of the Lone City
The forty thousand Cao's Army moved together and dug out two whole ditches on the same night, restricting Zhen Cheng and the city guards and also setting up many layers of deer antlers.
As a result, with the limitations of the moat and deer horn, even Xiliang Cavalry would find it difficult to break out of the encirclement, let alone the Infantry s of the Yan Prefecture army inside the city