Chan'er thought of this as well. "Your Ladyship, this servant has been racking her brains. The behavior of these two Tujue sisters is utterly bizarre. Could they have slipped some evil medicine to the Emperor, or cast some unspeakable sorcery? I've heard that in the remote southwestern regions, gu venom and black arts are rampant. Once someone is infected with gu venom, they lose their senses, fall into an endless abyss of desire, and find themselves utterly unable to pull back!"
"Enough! That is the Southwest, not Tujue. What talk of gu arts—it's nothing more than groundless gossip. Never speak of this again, and stop indulging in wild speculations."
In the inner court, such matters were strictly taboo.
Chapter 341