Gabriel's Battle with the Dark Spirits Chapter 23

When he mentioned this, Ethan Xie remembered. The pattern of blood flowing out of the circle formed by these "dwarf mandrills" was indeed very similar to the blood sacrifice formation he had seen in a book. The reason why he did not recognize it at first glance was that in the public's cognition, this formation only existed in theory, and it was only a theory. In reality, few people would try it...

After all, this is a great evil formation that exchanges life for life. Once the formation is really set up, it means that all the people who set it up are dead.

Since the person who sets up the formation dies and the blood flows continuously, if it lasts for a whole day and night, the formation can truly exert the full effect of the sacrifice. If you want to shorten the time limit, you must capture a hundred ghosts who have not passed the seventh day of death, preferably those who died suddenly, and the more resentful and evil spirits, the better.

Ethan Xie recalled the general content of the blood sacrifice formation, and then he understood why they met the "dwarf mandrill" with a bunch of ghosts in his hands at the foot of the mountain.

"It seems that it has not even been a full day and night." Gabriel Yin said, and it was obvious that he had the same idea as Ethan Xie.