The Mo Household's Clan-Guarding Grand Formation was third-tier lower-grade.
With Li Ping's mastery of formations, modifying it was naturally as easy as turning his hand.
Generally speaking, a Clan-Guarding Grand Formation like this primarily guarded against threats from outside, whether through its built-in attacks or its defensive energy shield.
Ultimately, if the enemy had already entered the formation, what was the point of defending anymore? They might as well flee for their lives before it was too late.
Li Ping intended to let the Eastern Sea Four Fiends inside the Mo Household's clan-guarding formation, then shut the door and beat the dogs. Thus, his modifications mainly involved redirecting the third-tier grand formation's attacks inward.
With the power of a third-tier grand formation, once the fighting began, it would effectively give their side several additional Core Formation Stage helpers.
Finally, to be safe, Li Ping forcibly added a self-destruct function to the formation.
If the situation truly became critical, he could directly command the third-tier grand formation to explode, forcing an opening.
Of course, judging by the relative strength of the two sides, he suspected he would not need that final move, Heaven-and-Earth Perish Together.
He was merely taking out a little insurance.
Only after finishing the modifications did he leisurely direct Mysterious One to the cave abode where Wei Yiling and Feng Xishuang were staying.
In an even tone, he recounted how he had inadvertently uncovered the Mo Family Grand Elder's plot to send someone to collude with the Eastern Sea Four Fiends, intending to coordinate from inside and outside to capture them.
He also explained his plan to turn their scheme against them and lure the Eastern Sea Four Fiends over.
After hearing this, both Wei Yiling and Feng Xishuang looked shocked. Wei Yiling in particular had never imagined