in the previous chapter it was mentioned as part of the system upgrade that they may use to unlock a title (hero) for another or get something like a skill...
I believe it would be similar to a bident (pitch fork with on 2 instead of 3) that can be used to ensnare the head of prey while others stab it to death..
The hunter team should have received new hunting forks and bows too. Was the territory going to rise up?
The advantage of having 15 Stamina Points was very obvious: the hoe made from stone was able to withstand the intensity of his work too. In just one morning's time, Li Siwen's progress was already way ahead of the other farmers. He had cleared about 0.8 acres of land, depleting 10 Stamina Points, successfully obtaining one Vitality Point before noon.