This black insect is called the Black Poison Gu. Its name might seem ordinary, but in reality, it is an insect that is even more terrifying and dangerous than the Vajra Gu!
This Black Poison Gu is refined by extracting extremely poisonous Yin Qi from underground.
Initially, the refined product is a grayish-white poisonous insect as thick as a finger, resembling both a worm and mist, constantly emitting a foul Yin aura, with a stench that makes one nauseous. Just a single wisp can poison hundreds of people.
After refining for hundreds of years, the finger-thick poisonous insect becomes as thick as chopsticks, and its color shifts from grayish-white to pitch black, with the smell disappearing entirely.
Further refining over hundreds of years allows the poisonous insect to truly gain a trace of spirituality, shrinking to the thickness of a hair, becoming a real living creature.
