บท 2289: The Golden ROC's killing feather

"You see!"

Yan Qingyu took out an old book and handed it to Chen Xiaobei.

This ancient book had no name, but it was very thick. The main point was that every page was handwritten. There were many annotations and even simple sketches!

From Chen Xiaobei's point of view, this was more like a scientific journal! It recorded the author's thoughts and thoughts on the alchemy Dao research!

There were all kinds of pill recipes, as well as insights on controlling fire, the intricacies of the pill furnace, and the matching of medicinal herbs!

Obviously, the reason why Yan Qingyu was able to become a famous Alchemist at such a young age and become the first female young master of the Yan family was because of this! It was all because of the help of this ancient book!

To Yan Qingyu, this was a secret that she could never tell anyone! He couldn't even tell his family!