Xiao Yan was constantly innovating, so as his teacher, Yao Lao naturally could not cling to old conventions.
Taking Xiao Yan's physical condition into account, he further improved the Blood Burning formula.
With his abilities as an eighth-tier alchemist, it was hardly difficult.
As early as when he had first refined Blood Burning for Xiao Yan, he had made an extremely radical alteration to its formula.
The original Blood Burning formula only required magical beast blood, but that was for ordinary people.
Xiao Yan had cultivated at a terrifying pace for years. Ordinary magical beast blood could hardly have any effect on him.
Only the violent energy of a second-tier fire-attribute magical beast core could stimulate Xiao Yan's cultivation speed to the greatest extent.
The materials for the new Blood Burning had gained over fifty additional fire-attribute medicinal ingredients, as well as a third-tier fire-attribute magical beast core.
Seeing that the number of medicinal ingredients had nearly doubled, Xiao Yan sucked in a cold breath.
This teacher of his was truly strict!
If ordinary people used the medicinal liquid refined from this stuff, it would probably be torture fit for slaughtering pigs.
Even before today, if he had used this stuff, he would probably have suffered terribly.
After his body was coated by the alchemy puppet, Xiao Yan used the Heaven-Burning Body Tempering Art to absorb the medicinal effects of the new Blood Burning while mobilizing the power of the stars to neutralize its scorching medicinal strength.
Once he had completely absorbed the medicinal liquid on his body, Xiao Yan's physical constitution improved greatly, while his Dou Qi cultivation broke through once again, reaching the level of a seven-star Dou Zhe.
He let out a heavy breath of stale air, then raised a hand to wipe away the layer of