A week later.
Xiao Yan and Xiao Yi Xian sat together, listening to Old Yao's lesson.
The content was naturally an explanation of various medicinal ingredients, as well as the rules and precautions for combining them in pill formulas.
But the difference was that Xiao Yan was learning how to properly combine medicinal ingredients and avoid those that clashed with one another.
Xiao Yi Xian, on the other hand, was listening specifically for the combinations mentioned in those precautions—ones where opposing medicinal properties would produce intense toxicity.
This undoubtedly opened the door to an entirely new world for Xiao Yi Xian.
In the past, she had directly used poisonous medicinal ingredients to concoct poisons. Most of her theoretical knowledge had actually come from the Seven-Colored Poison Manual.
But something collected by a senior who had, at most, been a Dou Emperor could hardly have been particularly profound.
Old Yao, however, had been a Dou Zun in life, a genuine peak eighth-grade alchemy grandmaster.
His research into medicinal ingredients and medicinal principles could be called among the very best across the entire Dou Qi Continent!
Naturally, both Xiao Yi Xian and Xiao Yan benefited greatly from his understanding of medicinal ingredients.
"So that's how it is..."
Xiao Yan also seemed deep in thought.
Some of Old Yao's theories were actually quite similar to the traditional medical theories from his previous life, making use of the properties of medicinal ingredients themselves to combine and balance them.
Compared to the people of the Dou Qi Continent, Xiao Yan, a transmigrator steeped in traditional culture and influenced by traditional philosophical thought, found this way of thinking the easiest to understand.
"Teacher, I understand!"
Xiao Yan suddenly took out his medicinal cauldron.
"Hm?"
Seeing Xiao Yan bring out the medicinal cauldron, both Old Yao and