Soul cores, each about the size of an egg, deep blue all over and almost pitch-black, rained down from midair onto Soul-Shaking Mountain.
A soul core was the essence of a soul beast. After a soul beast died, its corpse was useless and would turn to ash and scatter away, leaving behind only the soul core.
Soul cores contained a great number of Soul Dao Marks and were excellent Gu materials.
Soul cores came in all sizes. Ordinary soul beasts had soul cores only as large as grains of rice; only at rank 6 did they become egg-sized. Rank 7 ones were even larger, while the soul cores possessed by Rank 8 Primeval Soul Beasts were each as large as carriages.
After some discussion, the Fang Family ultimately agreed in secret to Fang Yuan's request in his letter and secretly sent over a large quantity of soul cores. These soul cores were basically Rank 6 Gu materials, with a small number being Rank 7 soul cores. There was not a single Rank 8 soul core.
Fang Yuan did have two Rank 8 soul cores in hand, which he had stored away for now and did not wish to use for producing Courageous Gall Gu on Soul-Shaking Mountain.
Rank 8 immortal materials were generally used to refine Rank 8 Immortal Gu or construct great formations. Using them merely to produce Courageous Gall Gu would truly be using a butcher's knife to kill a chicken.
Light flickered across Soul-Shaking Mountain. The soul cores were shattered into powder by the vibrations, scattering countless essences that sank into the mountain. Soon after, one Courageous Gall Gu after another condensed into existence, flourishing splendidly.
Watching this scene, Fang Yuan nodded inwardly. "With this, my Soul Dao Cultivation can return to the right track and advance