The Yijing Marrow Cleansing Skill activated on its own. His Blood Qi surged as Pure Yang True Qi rushed through his flesh like a furious tide. A fine layer of sweat instantly broke out on his back.
His right hand subconsciously went for the Red Fire Dragon-Swallowing Mace on his back.
The pores all over his body sealed shut in an instant, and his skin took on a faint golden sheen.
"Senior, when did you..."
The moment the words left his mouth, Xu Yunfan's pupils contracted sharply.
It was only then he realized, to his horror, that he hadn't sensed the old man's presence at all!
Even now, with the man standing within three feet of him, sweeping his Divine Sense over the area was like probing an empty valley, a silent abyss. Only the Sword Aura that occasionally flashed within those murky eyes proved this was a living, peer-to-none master.
