He divided the seeds of the eleven spirit herbs-the main ingredient and the supplementary ingredients-into separate plots, planting them at set intervals. For each herb, he planted enough to provide ninety batches of alchemical ingredients.
Of the eleven spirit herbs, the main ingredient, jade spirit grass, took the longest to grow. It needed a hundred and fifty years to mature, reach its growth limit, and produce seeds. At the Immortal Mansion's accelerated growth rate, that would take fifteen hours.
Liu Yu waited patiently beside the Black Spirit Field. Whenever a patch of spirit soil turned yellow from a lack of Spiritual Power, he immediately replenished it.
He harvested the Spirit Herbs that matured earlier right away and collected their seeds, preventing the seeds from continuing to grow and wasting Spiritual Power.
Fifteen hours later, all the spirit herbs needed to refine Jade Spirit Pills had matured. Liu Yu stored each kind in separate jade boxes and left the Immortal Mansion world.
It's time to get a higher-grade pill furnace.
The Purple Mystic Cauldron was only a middle-grade magical artifact, after all. As the pills he refined rose in grade, it became less and less helpful. When refining Foundation Establishment Realm pills, it could even become a burden.
With that thought flashing through his mind, Liu Yu entered the pill-refining room established by the previous occupant, took out the Purple Mystic Cauldron, and set it on the floor.
This time, he did not set up the Red Flame Formation to generate flames. Foundation Establishment true fire already met his pill-refining needs. Its temperature was high and its magical power consumption low; its only drawback was that the flames were somewhat unstable.
Still, his divine sense had improved enormously after he reached the Foundation Establishment Realm. He believed he could keep the