According to the Holy Demon Sect's legacy of Gu refinement, cultivators who followed this path needed to rear at most two or three kinds of Gu. That was enough.
Bite off too much, and you could not chew it all.
Nor could they afford to raise too many.
In fact, they only needed to choose one suitable Gu as their life-bound Gu and nurture it to become ever stronger.
It would complement them, and they would grow together.
Lin Fei's Immortal-Eating Gu had come from what the Ten Thousand Gu Demon Patriarch left behind; he had not raised them himself.
To reduce their consumption, the Immortal-Eating Gu usually had to live in dormancy, which also robbed them of further opportunities to grow.
Long periods of dormancy would even make them increasingly weak.
Lin Fei had no choice in the matter. Although his holdings were extensive, his reserves were not deep enough.
Unless he "fed his Gu through war," using their strength to continually attack other immortal cultivation factions and plunder their cultivation resources.
But once word of such conduct spread, every immortal cultivation faction would fear for its own safety. They would surely join forces to kill him in the name of slaying demons and vanquishing evil.
Even the Holy Demon Sect, mighty as it had been back then, had ultimately met with annihilation.
Thus, even with such powerful backing as the Immortal-Eating Gu, Lin Fei did not dare act too brazenly. He could only conceal his strength.
"This core region of Medicine Mountain really is a treasure trove. There are actually so many immortal-grade spiritual herbs here."
"Ten-thousand-year purple gold ginseng, nine-turn mysterious yellow grass, longevity green vine, spirit-rushing soul-washing flower..."
Using the Everchanging Gu's disguise and concealment, Lin Fei's spirit body searched throughout the core region of Medicine