The moment he passed through the crack in the stone door, Jiang Qiao felt a scorching wave of air rush toward him.
The passage was not long, only a dozen meters or so.
The walls on both sides were covered in Zhen hexagram symbols. Bathed in purple-red light, they twisted slightly, like countless wriggling insects.
Jiang Qiao walked slowly.
His gaze swept across those symbols.
The deeper he went, the more complex their forms became.
They were no longer simple Zhen hexagrams. All manner of variations began to appear, some having completely departed from the realm of hexagram lines and become more primitive symbolic patterns.
Some resembled fractured lightning.
Some resembled intersecting thunder serpents.
Some resembled exploding arcs of electricity.
They intertwined across the walls in layer after layer, creating a strange sense of depth.
One glance was enough to make one's head spin.
"They're all patterns related to thunder and lightning." Shen Boxia followed behind him and noticed the complex markings as well. "The farther in we go, the more complicated they become. It's like they're evolving into something."
"Mm."
Jiang Qiao nodded without saying anything else and continued onward.
At the end of the passage was a larger space.
It was a circular underground palace, over a hundred meters in diameter and at least twenty meters high. Its domed ceiling was built from massive blue bricks, every one of them carved with symbols.
The center of the underground palace was empty.
There were no furnishings whatsoever.
Yet the surrounding walls were covered in murals.
The paint on these murals had already flaked away in patches, their colors faded, but their general outlines were still visible.
Jiang Qiao walked up to the nearest wall.
His eyes shifted slightly.
The mural depicted a modern plaza. Many people dressed in modern