Xu Qing didn't pay much attention to the youth's vigilance; he just glanced and noticed the issues with the youth's condition.
The other party was indeed poisoned and Xu Qing had encountered this poison before.
It was the one-eyed cultivator's poison. However, it was much diluted and hadn't erupted yet.
However, the young man's weak constitution had caused an early reaction.
Xu Qing had always remembered the one-eyed cultivator's escape. Now that he sensed this poison, he became a little interested. Hence, he threw out an antidote pill.
"Go back, prepare a wooden bucket of water, get nine drops of morning dew, then swallow this antidote, and immerse yourself in the bucket, meditating for an hour."
"When the water turns completely black, it means your poison has been cured."
The young man took the pill, somewhat skeptical, but still gave a spirit stone to Ling'er before quickly leaving.