As Su Mo poured Spiritual Power into the Pill Furnace, fierce flames suddenly blazed inside it, the heat of the Spirit Fire continuously scorching the herbs within.
After a moment's thought, Su Mo reduced the Spirit Fire, letting a low flame first draw out the essence of the herbs.
Once the herbs' essence had been extracted, Su Mo beckoned, and the dregs, their medicinal properties refined out of them, flew out of the Pill Furnace.
Under the control of Su Mo's Spiritual Power, the remaining medicinal vapors continually fused with and repelled one another...
Beside him, Elder Du merely watched Su Mo refine pills, saying nothing and pointing out no mistakes. He simply watched in silence.
After an unknown length of time and a series of maneuvers by Su Mo, a plume of black smoke suddenly rose from the Pill Furnace, and the various medicinal properties vanished into nothingness...
Su Mo was stunned. His first attempt at pill refinement had ended in failure just like that.
Elder Du, however, remained calm beside him, as though everything had been expected.
"Why do you think you failed?" Elder Du walked over to Su Mo and asked, looking at the black smoke rising from the Pill Furnace.
Su Mo stared at the Pill Furnace and shook his head in bewilderment.
He did not know why he had failed either. According to his calculations of the various medicinal properties, he should have succeeded, yet reality had mercilessly slapped him across the face.
"Think again." Elder Du did not point out the crucial reason for Su Mo's failure, merely sipping his tea calmly.
Su Mo frowned and thought carefully, then turned toward the herbs beside him. When he saw one giving off a chill, he suddenly seemed to recall something and exclaimed excitedly:
"I know!