During the Ancient Zenith Civilization, legacy pearls were specializations of big sects. Small sects simply had no way to make such a legacy pearl. It was not just that the method of making them was a secret of the various sects. The most important thing was that the materials to make one were very difficult to obtain.
This was because legacy pearls were not refined like weapons, but grew out of the soil. The raw materials for legacy pearls could only be found in special treasure trees.
These treasure trees were hard to find, and once they bore fruit, they would quickly wither and die. No one knew where to find it the next time around.
Therefore, legacy pearls became a kind of supreme treasure of large sects, and these legacy pearls were often in the hands of the sect leaders and sect masters of the large sects.
