Zhen Xuan traveled through the prehistoric times and became an inconspicuous formation cultivator. He doesn't have the ability to defy the heavens, and he doesn't have magical powers to kill, but he has realized his own way of stability: using the heaven and earth as a chess game, and cause and effect as shackles.
Relying on his self-created paper man clone technique, his real body is permanently stationed in the safe house, while thousands of paper men travel across the mountains and rivers, quietly mapping spiritual veins and laying out formations. Moving powerful enemies, killing people with borrowed knives, transferring cause and effect... All the battles are done by paper figures, without any karma on their own.
From binding the spiritual veins of mountains and rivers to forging the entire prehistoric world into the cornerstone of his own formation; from being mistaken for a hidden master to being revered as the "formation ancestor" and discussing the Tao with saints - he has always been steady and never leaves the house, but secretly controls the veins of the world.
Until the calamity comes again, demon gods from outside the territory invade, and all the saints are defeated. Array Xuan finally activated his ultimate back-up plan and said calmly: "This prehistoric period is the largest formation I have ever laid."
With his body and mind, he united with the Tao to turn the world into an absolutely safe zone. From then on, attacking the prehistoric world is attacking himself. The true eternal stability and transcendence have been achieved since then.