Jiang Hao was even more confused after his visit to the library. The scriptures and scrolls did talk about the Heaven Extinction Gu Poison but mentioned nothing about its origins.
The Yin Gu poison and the Yang Gu poison were similar in their effect. The one who consumed it would stay in a sage-like state at all times, except when they saw the person who had consumed the other poison.
Jiang Hao was still in doubt whether it made her emotions fluctuate as it did with him. She was a demoness who was likely very experienced and powerful. It was unlikely that she would feel the effect of the poison at an extreme as he did.
It made him feel like he was at a constant disadvantage.
The next morning, Jiang Hao used the Daily Appraisal on the spirit beast.