Once the Golden Core is formed, a thread of Immortal Golden Nature will be born within, granting him a long life span, and essentially bestowing a hint of the "Immortal" quality.
In fact, this is indeed the case; Golden Core Great Cultivators are also known as Human Immortals.
Yang Spirit masters are called Earth Immortals, meaning to become immortal right where they stand; wherever they are, there is Blessed Land.
Primordial Spirit is referred to as True Immortal, signifying surpassing Earth Immortal, truly and strictly an everlasting immortal!
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As time passed bit by bit, Gu Yuan manipulated his Dao Foundation inside, urging his Qi and Blood, making his entire body resemble a Heaven and Earth furnace, the radiant and fiery Qi and Blood like terrifying True Flame, refining and merging all Divine Dao Seeds into one.
