A boy could be seen meditating, his body radiating slow gusts of icy winds to the environment. He continued his cultivation before stopping for a moment to consume an elixir before continuing; By practicing this technique, he had already gained a lot of pain tolerance.
Now he doesn't feel that uncomfortable when practicing it. This continued for an hour before he stopped. He breathed, and a gust of wind was released that froze the area it passed by; this was how much he had improved his technique.
His body has now transformed into a sturdy and tough body; he is now at least fifteen times tougher. The regeneration has also become very strong; even his passive regeneration was capable of healing even fatal wounds in a few minutes.