Master one and you'll master them all. Besides keeping warm, it can be used for roasting jerky, and even for tribal defense and night marches of tribesmen.
...
When you were about to stop comprehending, you suddenly felt that there was something inappropriate about the intricacies of the Witch Array in the Fire Dragon Wall that you were contemplating.
Clearly, it was a Defensive Array, so why was there also an aura of sharpness? You spent another hundred years comprehending it and finally realized that there was indeed another Array overlapping with the Witch Array of the Fire Dragon Wall.
Due to the passage of time, the two Witch Arrays were too close and had influenced each other.
...
After another three thousand years, you comprehended the Ten Thousand Flames Spirit-Burning Array.
On the Iron Bridge, Shen Can slowly opened his eyes, a flash of comprehension in them.
