The problem is that such methods require consuming a vast amount of Immortal Stones, a tremendous amount of energy.
After all, the energy needed to maintain the Spacetime Array is simply unimaginable.
In the end, weighing the pros and cons, the Pill Masters of the medicine civilization still chose to abandon this cultivation method.
Because the harvest and the cost are simply disproportionate.
It's completely a loss-making deal.
But Zhou Sui is different; he seems to shorten the growth cycle of Immortal Elixirs, without needing to pay a huge price.
No need to set up any Spacetime Array or accelerate time flow.
There's no doubt that if the medicine civilization in the past had mastered such power, perhaps it wouldn't have suffered such a miserable defeat.
"But this is also a good thing."
"After all, if a large number of Immortal Elixirs can really be cultivated, then the Immortals of this era might become more powerful."
