This slow refinement process was far more difficult than refining the first drop of essence blood, but Li Yan was in no hurry. Just by recalling what Ming Qi had once said, he could judge that this outcome was to be expected.
When Ming Qi distributed silver sand to members of her clan, she had said that each person would receive anywhere from two to five grains. As for the outcome, that remained uncertain and depended on their own fortune.
Even though they were of the Undying Nether Phoenix clan, refinement still required many conditions, such as the silver sand matching one's own level.
If the disparity between the two was too great, refinement could kill the person instantly. Therefore, after Ming Qi brought back the silver sand, she had to confirm all sorts of conditions before selecting suitable clan members.
Once everything was suitable, even refining one or two grains of silver sand required no short amount of time. He was not of the Undying Nether Phoenix clan, so being able to refine it at all was already good enough...
It had taken him nearly nine years to successfully refine the first grain of silver sand. Once refinement succeeded, he could use that as a foundation to assimilate the marrow throughout his body.
In the end, it could gradually purify his bloodline. But if Li Yan truly did that, he would not necessarily get what he wished for.
Li Yan was not a true member of the Undying Nether Phoenix clan, and his marrow was not of the same kind. After refining that bit, it could not assimilate his own marrow and could only be refined and fused.
Thus, fusing one or two grains would not produce the obvious, tremendous changes it would in the Undying Nether Phoenix clan.