Zhao Yun kept probing Cao Chun's formation time and again, yet never actually stepping into it. Likewise, Cao Chun had no solution for the nimble, swift White Horse Soldiers; even archery couldn't match their range, which was simply inconceivable to him.
Cao Chun finally understood just how formidable Gongsun Zan's renowned White Horse Soldiers were. This was with the benefit of a formation to protect them. Without this layer of protection, the White Horse Soldiers wouldn't need to engage in formations, simply circling and engaged in mounted archery would be enough to cause his troops to crumble.
[The speed is too fast, and if they decide to leave, there simply isn't a way to stop them. To defeat this kind of unit, one can only rely on special terrain. Otherwise, their freedom to come and go is too unrestrained. We must restrict their mobility!], Cao Chun thought to himself as he watched the graceful, quick maneuvers of the White Horse Soldiers with a rising sense of realization.