Not only them, but most of the elves are like this.
The totem rituals of the wild elves are akin to those of the primitives. It's about walking naked into a forest clearing filled with totem runes and spending the night, feeling the breath of nature and merging with it, to further discover the wild power within their bodies.
It was already autumn, and before the sun had even set, the temperature in the dense forest had plummeted, with chill pervading everywhere. Although Gaven's constitution was astonishing, until he acquired cold immunity, he would still be affected by the external temperature.
It didn't take long for the cold to fully infiltrate every bone in his body, tightly gripping Gaven's mind, creating a temptation to give up, and he couldn't help but wonder if these green elves were deliberately torturing him?
But what good would that do them?
Instead of panicking in adversity, Gaven's thoughts became sharper, clearer.