And that was indeed the case.
None of the four Elders encountered any issues while refining and absorbing the pill.
The Elder at the Peak of Foundation Establishment was the fastest to finish refining and absorbing it.
He felt that while the Upper-Grade pill was refined and absorbed very quickly, the increase in Spiritual Power it provided was rather mediocre.
This was normal. The main ingredient, the Four-Core Spirit Flower, was merely a mutation of the Three-Core Spirit Flower and was still a Second-Tier, Lower-Grade Spirit Medicine. A pill using it as the main ingredient was primarily intended for early and mid-stage Foundation Establishment Cultivators, just like the Spirit Ascension Pill.
The Late-stage Foundation Establishment Elder's experience was not much different from that of the Elder at the Peak of Foundation Establishment, except that the pill was slightly more effective for him, with its effects not diminishing as noticeably.
