Hui Wenzu returned to the post station with his troops. He brought not the Yin City garrison, but troops from the county garrison in the southern suburbs of Yin City.
The local official system of Yan State was somewhat chaotic. It was divided into substantive and nominal posts, alongside a plethora of symbolic positions used to reward and pacify local influential families. This gave an overall impression of a hodgepodge.
However, Yan State's military system was very streamlined, divided into three main armies: the North Border Army, under the jurisdiction of the Earl of North Border; the Forbidden Army, in the capital; and the Jingnan Army, permanently stationed in Yinlang County.
These three armies could be considered Yan State's ace field armies, serving as the cornerstone of the country.
