Inside the small house, it seemed as though stormy waves were surging.
Dark crimson light and shadow rose and fell in waves centered around Fang Yuan.
Fang Yuan was refining Gu.
All ten fingers of his hands were spread open, his two palms holding up a gloomy sphere.
The sphere was as large as a washbasin. Its surface flowed slowly, and it was the essence Fang Yuan had extracted from black oil.
The Gu refinement had reached its middle-to-late stages—the most critical moment.
With a thought from Fang Yuan, the Immortal Aperture Portal opened a narrow crack, and he took out a brilliant golden scale.
The scale shot into the black oil sphere, immediately causing a faint explosion. In Fang Yuan's field of vision, the black oil sphere suddenly swelled at the instant of the explosion. At the same time, golden radiance flashed within the black sphere, then rapidly condensed into a single golden point.
Fang Yuan's ten fingers trembled slightly. The black oil sphere gradually floated into the air and began spinning rapidly.
As it spun, the golden radiance swayed without end.
A fishy stench began to spread swiftly. These were impurities Fang Yuan had expelled.
Just as the stench was about to spill out of the small house, the light and shadow of an immortal formation flashed into being. Like a pot lid, translucent blue, it firmly confined the stench within, allowing not the slightest bit to seep out.
This stench was also immortal material, containing Food Dao Marks, and was far more terrifying than black oil. Once a mortal Gu Master came into contact with it, death was certain.
Fang Yuan's Gu refinement this time had already entered the realm of Gu Immortals, because it involved two kinds of immortal materials. One was black oil, while the