Chapter 145: The Elixir of Longevity, the Fate of the Demon! Savage Invasion!_4

He never expected to see 'Hong Zhenxiang' just now on the street, and the man in grey knew he couldn't take that risk, needing to call off the operation and head to other towns.

"I can sense Spiritual Energy... I can distinguish the hidden Barbarian Martial Artists by the flow of Spiritual Energy!"

Atop the city wall, Su Changkong was pondering a way to detect the potential presence of Barbarian Martial Artists, which was through sensing nature's spiritual energy!

As Su Changkong's Guiding Technique grew increasingly profound, he, much like Hong Zhenxiang, was able to feel the flow of nature's spiritual energy.

Generally speaking, the stronger a person, the more Spiritual Energy would gather and flow around them, and this was a fact that some Martial Artists themselves didn't even realize!