章 655: Deducing a Gu recipe

Many flashes of inspiration appeared in his mind.

Countless ingredients and Gu worms formed into many different ideas.

The thoughts in his mind were also being consumed at a rapid rate. Such intense expenditure had far exceeded Fang Yuan's own limit in thinking speed.

"The power of a rank nine Gu is truly terrifying! In fact, I have not even refined wisdom Gu, I am only using a bit of its light of wisdom." Fang Yuan sighed in shock as he went out of the wisdom light halo.

He was deducing and perfecting the refinement recipe of gruel mud Immortal Gu.

Unlike beforehand when he reflected on the current situation or the changes in his body, perfecting an Immortal Gu recipe needed many more fields of consideration. A set of Gu refinement materials contained up to tens of hundreds of different materials. Not to mention the grouping and coordination of different Gu worms.