Duncan's sword light was like a lone beacon of light in the darkness of the valley.
It smashed through the qi arrows and landed on a couple of the scorpions on the ground causing them to screech in pain. Duncan noticed that these scorpions were averse to light and they fled from it in a hurry causing him to see a little bit of hope in this situation.
What Duncan didn't know was that these scorpions are beings that usually dwell in mountain caves. They are known as Dark Scorpions and they are incredibly sensitive to light. They excel in digging and prefer a dark environment as their habitat.
While this wasn't their preferred habitat, the unique phenomenon of this area allowed them to grow unhindered in this region. They have had over a millennia to multiply and develop as a species in this region.