The moment Xu Qing broke through to Dark Force, new words surfaced in his mind—
[Breakthrough Traits: Viscera into Furnaces, Unceasing Internal Circulation]
In that instant, his five viscera and six bowels seemed to ignite. It was not burning—it was true "furnace transformation." His heart, liver, spleen, lungs, and kidneys were no longer organs of flesh and blood, but blazing furnaces.
Every heartbeat was the pumping of bellows, blowing force into the heart of the furnace. Every breath was the furnace fire drawing in and exhaling, refining away foul air and retaining pure qi.
His organs had directly become a forge for force.
Force rose from his dantian. It first entered the heart furnace, gaining the nature of fire and becoming scorching and sharp. Then it passed into the lung furnace, gaining the nature of metal and becoming keen and enduring. It fell into the kidney furnace, gaining the nature of water and becoming deep and dark. Passing through the liver furnace, it gained the nature of wood and became ever-growing and unceasing. Finally, it returned to the spleen furnace, gaining the nature of earth and becoming heavy and stable.
After making one full circuit through the five viscera, the force had been "refined" once.
With each refinement, it became a fraction purer, until its foundation was without flaw.
Viscera into Furnaces possessed another wondrous effect: digestion.
In the past, when he drank medicinal decoctions or took pills, the medicinal effects were never fully absorbed, leaving residual pill toxins in his body.
Now, things were different. Spiritual plants and precious medicines that entered his stomach were tempered layer by layer by the fires of his viscera. Their essence was extracted thread by thread, cocoon by cocoon, while impurities were burned away by the furnace flames and expelled cleanly.