Lin Changsheng noticed that a stone pillar stood every few dozen zhang along both sides of the street;
a fist-sized crystal ball was embedded atop each pillar, giving off a gentle glow.
Curious, he asked, "Deputy Hall Master Xue, could these be talisman formations for lighting?"
Xue Yubing raised her hand and gently tapped the stone pillar, smiling. "Brother Lin, these are a hundred times more ingenious than talisman formations. Eggs of first-tier low-grade Yinghuo Insects are sealed inside these pillars.
"The crystal balls contain phosphor powder. Simply drop one low-grade spirit stone into the slot at the base, and the eggs will hatch into glowing larvae. The light will last three months without going out."
Chang Ping'an listened with rapt attention beside them and could not resist interjecting, "Besides lighting, do they have any other uses?"
Xue Yubing continued, "These pillars are also connected to the Night Watch Formation.
"If danger approaches, the crystal balls will suddenly blaze with light, while the pillars release blood-red smoke to pinpoint the direction of the enemy attack."
Most of Chang Ping'an's earlier disdain had already faded. He exclaimed in wonder, "These ingenious arts... could they all have been created by generations of Golden Core elders of the Infinite Extremity Devil Palace?"
Xue Yubing shook her head. "I'm not too sure myself. What I know barely scratches the surface.
"The Infinite Extremity Devil Palace is something of an anomaly in the Moon Sea Region. You would probably struggle to find sights like these anywhere else.
"This is a system and a way of thinking that have seeped into their very marrow. Even if we wanted to learn from them, we might not succeed, let alone achieve this scale.
"Despite being demonic cultivators, they have applied cultivation arts everywhere. What I've mentioned is only