An Yan invoked the Clairvoyance Technique to see if there was anything unusual, but she found nothing abnormal.
After the test paper changed color, Li Qingqing took out a yellow Talisman Paper.
It only had three lines: the middle one was slightly thicker, and the two on the sides curved like earthworms.
As An Yan silently memorized the pattern, the Talisman Paper suddenly combusted without flame. It flitted in the air before Li Qingqing pressed it into a bowl of water.
The water was pure. As the Talisman Ash fell into it, the water turned a light purple.
An Yan guessed that the Talisman Paper must have contained something like potassium permanganate.
Next, Li Qingqing used this water to wash the area behind the old man's left ear.
After that, she picked up a knife and made a two-millimeter incision behind the old man's ear.
Her cut was both accurate and quick, expertly avoiding any blood vessels. After one cut, the old man's wound didn't even bleed.
