After the Daoist withdrew his sword light, rippling cloud-light suddenly surged over his body. Layer upon layer of cloud-light, like scales, wrapped around him in a single flicker.
This man was called Zhenxian. He too had come from the Subtle Governance Dao-world, and possessed two Dao methods: one for defense, the other for sealing and restriction. In truth, these two methods stemmed from the same source and were two sides of one whole, thus jointly named "Caress Passage, Gaze at Life."
This was an exceedingly rare sealing and suppressing method. No matter what Dao method came at him, so long as he saw it before him and sensed its qi, he could seal it within his own Dao method.
While it was sealed, the master of that Dao method could not use it. If the sealing persisted for long enough, it could permanently sever them from that method.
Yet once he deployed this Dao method, he also lost all means of attack. Moreover, if he wished to sustain the Dao method, he had to remain near its master. If he fled, the Dao method would lose its effect. Thus, after the binding method emerged, the other defensive method on his body began operating in turn. It was in fact meant to hold fast and protect himself.
But prolonged defense inevitably led to loss. Even if one sealed another's Dao method, one could not thereby put the enemy to death. That might not be sustainable in the long run; indeed, there was a great chance that the opponent would destroy one's worldly body. Therefore, this Dao method had to be employed in concert with others to ensure one's own safety.
When Zhang Yu saw that sword light descend, only for it to suddenly vanish without a trace, he sensed that it