Formations were the Way of heaven and earth.
The Dao of formations was one of the Three Thousand Great Daos, a natural law of heaven and earth.
A formation was divided into the auxiliary formation, the main formation, and the most crucial formation eye.
The auxiliary formation was the outermost part of a formation, and also its most deceptive aspect.
The main formation, meanwhile, was the formation's lesser core. Take a Killing Formation, for instance: its auxiliary formation was the fruit before your meal, first probing your basic strength, while the main formation was where the true slaughter began.
Finally came the formation eye, the true core of a formation. The formation's weakest point was also this formation eye.
As the saying went, of the fifty paths of the Great Dao, one slipped away. That one which escaped was a thread of survival. Thus, no formation in this world was truly perfect, because every formation had a formation eye.
Once the formation eye was destroyed, the formation would collapse without being attacked.
Many formation breakers existed solely to seek out a formation's eye.
Later on, formations came in many varieties: trapping formations, which chiefly trapped people; Killing Formations, which chiefly slaughtered; Illusion Formations, which chiefly bewildered and deceived—too many to count.
The formation within Bai Ziran's courtyard was an Illusion Formation, one that chiefly bewildered and deceived.
"Oh? Since Elder Ye has personally come to ask for my help, I certainly cannot refuse him. Since Elder Ye has discovered the formation in my courtyard, then I'll have to trouble Elder Ye to give it a try."
"That way, I can see Elder Ye's understanding of formations and prescribe the right medicine for the ailment."
Bai Ziran, above him, smiled faintly at Ye Lin, a trace of cunning flashing through her