C633 Arm instability

Gu worms were also a type of poisonous insect.

The remaining one in a hundred poisonous bugs swallowing each other was called 'Gu'. This was also the origin of the Gu worm.

The Gu was created by the Poison Sect, there was no doubt about it. That was the reason why Qin Lang dared to say that he had the origin of the myriad of Gu techniques, and was the strongest in Gu arts.

However