An Inscription Array of Concealment is a type of Inscription Array capable of hiding other inscription arrays. It can only be inscribed and set up by Inscription Masters whose Mental Power is at or above the Martial Emperor Stage.
If Duan Lingtian were not an Inscription Master, he would have been utterly incapable of discovering the Illusionary Array blended with the Inscription Array of Concealment just now.
Precisely because he was an Inscription Master—and a brilliant one at that.
Chapter 1088