Primordial Wilderness: I Am Hong Yun, and at the Start I Traded My Saint Position for a Wife

Once the four had taken their positions, they immediately activated the Immortal Slaying Sword Formation!

The Immortal Slaying Sword Formation had two methods of operation: one to defend against enemies outside the formation, and one to trap enemies within it.

To defend against an enemy breaking in from outside, only one person was needed to preside over the formation. They would sit at the formation's heart and channel thunder to shake the four gates, where the four swords—Immortal Slaying, Immortal Extermination, Immortal Trapping, and Immortal Severing—hung.

Sword qi would surge outward, slaughtering powerful foes!

But to trap enemies within the formation, four people were needed to preside over it, one guarding each gate. They would activate the divine swords, gathering the sword qi of the four blades into one force to trap or kill their powerful foe.

Beneath the entire Immortal Slaying Sword Formation lay the Immortal Slaying Array Diagram, with four divine swords at its four sides. The formation's weak point was above it.

In the original course of history, the Four Saints had broken the formation at Jiepai Pass.

Sect Master Tong Tian had been no match for Lao Zi, Yuan Shi, Jieyin, and Zhun Ti. When he tried to escape through the sky above the formation, Daoist Ran Deng ambushed him with the Sea-Calming Pearl.

He had been knocked back down, suffering a tremendous loss of face!

Now, with the four of them surrounding the Karma Demon God, Hong Yun naturally wasn't going to leave any openings.

He immediately used the Twenty-four-grade Reincarnation Purple Lotus to cover the Immortal Slaying Sword Formation!

This would prevent the Karma Demon God from escaping over the top of the formation, while also giving Zhen Yuan Zi a way in.

After all, Zhen Yuan Zi hadn't truly attained Primordial Unity. He