The Empress listened to these words and appeared shocked, "Are you talking about the Gu poison?"
She almost doubted what she had heard.
Although the Gu poison is not unfamiliar, it has not been heard of or seen for a long time.
As a member of the Royal Family, she had to learn some ancient history and ancient texts from a young age. She naturally knew that Gu worms are unique to the ancient Witch Tribe.
Back in the earliest times, Witch Clan Beastmen could communicate with the Beast God. The Gu worms they cultivated were Medicinal Gu, used to cure diseases, save people, and solve plagues.
But later, for some unknown reason, Gu worms gradually became something terrifying. Some Evil Witch Beastmen could use them to do many things.
For example, killing without a sound, or turning beastmen into puppets, and so on.
Later on, the Witch Clan was annihilated, along with various Witch Secret Techniques and Gu worms also disappearing.
Su Muyao nodded, "Yes."
