Military Force Chapter.
It is neither a cultivation technique nor a formation, but a method of cultivation.
The entirety can be summarized with two words.
Change and illusion.
After integrating the cultivation techniques, one can change at will.
It could solve the current predicament faced by Feng Lin.
Having studied for so long, he only managed slight variations on the Divine Counterattack and the White Emperor's Holy Sword.
But according to the Military Force Chapter, his changes were child's play.
With diligent practice, Feng Lin was confident he could slay those in the Great Achievement Realm without resorting to the Desperate Seven Needles.
As for illusion, it's relatively simple.
Simply put, it's about pretending, making others believe what's false is true.
And what others think is false could actually be true.
Having studied for a while, Feng Lin had only managed to learn illusion.
Now, he could disguise himself in any realm.