The medicinal ingredients were refined one after another, and waves of medicinal fragrance wafted from the medicine cauldron. Anyone who could sense its interior would have discovered globules of medicinal liquid suspended within it like a dazzling constellation of stars.
Xiao Yu constantly adjusted the intensity of the flames, carefully refining each medicinal ingredient.
Every ingredient was different, so each required a different temperature for refinement. Hundreds of ingredients meant hundreds of temperature changes, all of which had to flow seamlessly into one another.
This meant that immense soul power was needed to control and sense the refinement and changes of the ingredients inside the medicine cauldron.
Moreover, when refining an eighth-tier pill, the refined medicinal liquids could not be taken out. They had to be kept at specific temperatures to remain active, ensuring that nothing went wrong when they were fused.
Thus, besides controlling the intensity of the flames, he also had to divide the interior of the medicine cauldron into hundreds of regions with different temperatures to hold the medicinal liquids.
It was an enormous undertaking. Even slightly insufficient soul power would make it impossible.
Yet Xiao Yu handled all of this with ease, astonishing the three men watching nearby.
"This young brother's refining technique and control are absolutely superb. I'm increasingly convinced that he really can succeed."
"An eighth-tier pill... that's a realm we could never reach in our lifetimes. Perhaps once he finishes, the two of us will have to address him as 'sir.'"
"Heh, isn't it perfectly normal to address an eighth-tier alchemist as 'sir'? Even if he's young, those with greater attainment are our teachers. I think we can call our young brother Master Xiao."
"We got to call someone like him our brother earlier. Even if it didn't last long, that's something we