However, there was no such thing as a free lunch. The difficulty of this technique was evident. Even the sage of slaughter wasn't able to practice this technique to a high level. Of course, this stemmed from him practicing it at a later period of his life.
In order to start practicing this technique, Adrian had to make various preparations. He spent a week preparing various rank 2 healing pills and concealment pills.
The astral steps worked on the concept of traversing through the void. Someone who practices the technique would be able to move freely through the void that exists between him and his target.
The void was a mysterious region that existed in the World around them. Only those with sufficient power would be able to interact with it normally. Travelling through it required even more strength. If those old powerhouses were to hear that Adrian was already planning to travel through it, who knows how they would react?