Afterward, Su Na performed a series of examinations on Yang Yi's body and discovered that temperature had a fairly pronounced effect on the Undeath Disease.
It required somewhat extreme temperatures, however, or no effect could be observed.
Low temperatures reduced the rate at which the Undeath Disease restored his flesh, greatly prolonging the recovery time.
If high temperatures exceeded the limits his flesh could withstand, restoration would stop, then resume once the temperature dropped.
But regardless of the method, Yang Yi's flesh would recover without any actual damage remaining, much less death, though he could still feel pain.
Meanwhile.
Yang Yi really suffered.
Su Na used the Ice Egg they had obtained in the Extreme Winter Sea, cracking it open, removing the White Shard inside, and implanting it in Yang Yi's left arm.
In the end, Yang Yi's left arm turned into a popsicle, and its restoration rate plummeted. Not only could she cut through the skin, she could even remove the charred tissue inside without it immediately retracting.
Su Na placed a small tissue sample in a sealed bottle, and then something unusual happened.
As Yang Yi's wound healed, the tissue in the bottle vanished along with it. The process was even visible, as though it were evaporating.
"Is this repair and restoration at the atomic level?" Su Na speculated.
Although the bottle appeared sealed, there were still gaps between the molecules making up its material. If matter were as small as atoms, getting out of a sealed bottle would actually be as easy as driving down an open highway.
If that were the case...
An Electron Microscope might allow her to observe the process of the tissue disappearing!
Su Na immediately brought up the Witch Laboratory's exchange interface. It did indeed offer an Electron Microscope, but the price