With the experience of successfully refining the first furnace, Huo Yuhao grew increasingly adept at refining the subsequent subsidiary furnaces.
The Life Creation Qi Refining Furnace breathed in and out the vast Heaven and Earth Yuan Power of the Ice and Fire Yin Yang Well. Light swirled around its mouth as one intricately structured subsidiary furnace after another, gleaming with dark golden light, was "birthed" into existence. They hovered around Huo Yuhao like stars surrounding the moon.
He was progressing steadily and efficiently toward his goal of one hundred subsidiary furnaces.
Yet the bustling activity below, along the edge of the Ice and Fire Yin Yang Well, was no less impressive than the spectacle overhead.
The Mind-Soul researchers who had received subsidiary furnaces did not sit idle.
Under Xuan Ziwen's leadership, they listened to Huo Yuhao's experience in refining subsidiary furnaces and began working on refining sub-furnaces.
A mere hundred subsidiary furnaces could never drive the development of the entire Mind-Soul system.
These hundred subsidiary furnaces could only serve as the heart of the Mind-Soul system.
The Mind-Soul Research Institute also needed to send blood flowing out to nourish the entire system.
They needed "vessels," sub-furnaces spread throughout the body that could carry blood to every corner of the Empire.
Sub-furnaces did not need the supreme spirituality of subsidiary furnaces, capable of turning stone into gold and transforming decay into wonder.
But they had to be stable, efficient, easy to reproduce, and relatively accessible to operate.
At the very least, they needed to be able to refine common low-grade materials directly.
This was the true lifeblood of mass production, supporting upgrades across the entire Soul Guidance system, from cutting-edge research to military deployment and widespread civilian use.
The demanding requirements of subsidiary furnaces and Mind-Soul Metal forging meant that they