For a few days, Zhang Tie had been immersed in the bizarre experience of formation bead. During this period, Zhang Tie finally realized why immortal emperors could be killed by a formation of common immortal generals in Motian Realm. Because of the formation bead that didn't exist in the world that he came from.
In Taixia Country, the foundation of knights' formation was the connection of three-in-one knights' consciousness. However, after experiencing the effect of the formation bead, Zhang Tie discovered that the so-called connection of three-in-one knights' consciousness was most fundamental for knights' formation. By contrast, the formation connected by beads was the most effective one.