With divine power, Han Yi encased a small cluster of Immortal Fire, separating it from the larger pile of fire. In a certain position of the Zhong Fu Divine Aperture, part of the 999 strands of Yin-Yang energy descended and began to encircle the detached Immortal Fire.
At some moment.
The Yin-Yang energy slowly approached the Immortal Fire. As it neared a certain distance, the surface of the Immortal Fire began to react as if it was being extinguished.
This was the Yin-Yang energy melting and refining the laws of the Immortal Fire.
Han Yi directed the Yin-Yang energy to retreat slightly, then edge closer again.
Seven days later.
Bang!
Within the Divine Aperture, the fingertip-sized cluster of Immortal Fire exploded. The Yin-Yang energy did not dissipate but maintained its peak state of 999 strands.
Within the quiet room, Han Yi opened his eyes, their depths flickering with contemplation.
The first attempt at refinement was an utter failure.