After each person had checked the pulse, they were utterly puzzled. However, there were two wounds on the person's foot, as if a snake had bitten him.
Xiao'er obtained the answer from the golden python, and she quickly wrote down the antidote concoction recipe as well.
The person was bitten by a two-headed snake. Both heads of the snake bit him, causing him to be unconscious.
Each of the snake's heads contained a different type of toxin. The clash of these two toxins inside his body resulted in his unconscious state!
Xiao'er handed the antidote concoction to the old man. The old man glanced at it, then looked at Xiao'er, and again said two words, "Very good!"
Xiao'er laughed gently, wondering to herself: Will he later say "impressive!" to me?
The next person who needed detoxification was completely weakened and helpless. Such symptoms would easily be considered as the outcome of the bone-softening poison.