This map differed considerably from the one in Ruan Zhi's possession. Many place names and detailed annotations of areas had simply been omitted.
Besides that, the depictions of the terrain in many places were entirely different from the other map. Some sections were even blurry, looking like rough sketches.
Yet this map bore many markings resembling formation eyes and formation feet.
In truth, Song Yan knew very little about formations.
Back in his early days at the Dongyuan Sect, while still at the Qi Refining Stage, he had indeed forced his way through several of the most basic introductory formation texts to find valuable formation stone fragments or formation beads in the Fireworker Stockade's rubbish heaps. He could barely recognize these basic concepts and symbols.
Later, after embarking on the Sword Dao and practicing various sword formations, he had drawn inferences from related principles and gained a somewhat deeper understanding of the formation Dao, enough to discern the flow and direction of Spiritual Power in some large formations.
However, the complexity of the formation before him clearly far exceeded his understanding.
The densely packed formation eyes marked on the map alone probably numbered no fewer than ten thousand.
The looping, overlapping formation patterns were even more dazzling.
He extended his index finger, condensed a wisp of Spiritual Power, and slowly fed it into the Jade Fold.
A faint hum sounded. Light flowed across the pale green-and-white surface of the Jade Fold, and countless fine, luminous patterns slowly emerged.
Soon, a vast and complex three-dimensional illusion projected above the Jade Fold, filling more than half the stone chamber.
The flat drawing had already offered some clues, but when the full formation appeared before Song Yan as an illusion, he still sucked in a cold breath.
Wind, rain, thunder, lightning; Sun, Moon,