After all that fuss, the root of it was right here!
Having sorted out the information, Yu Ci pressed his temples, speechless for a moment.
After entering the Returning Elixir stage, the Primordial Spirit gradually moved to the "front stage" and played an important role in cultivation. However, due to issues of heritage, fortune, and the like, actually very few cultivators could fully unleash the capabilities of their Primordial Spirit. Most were still in a state of confused exploration, only comprehending it once they reached the Stepping Void realm and nearly achieved the Yang God.
In comparison, Yu Ci could be said to have been "precocious." Four years ago in the Sword Garden, he had mastered the art of "analysis" without a teacher; this was an innate divine ability and also a deep application of the Primordial Spirit. With this foundation, once he entered the Returning Elixir stage and the true nature of the Primordial Spirit manifested, it came as naturally as water flowing to form a channel.
On quite a few occasions, Yu Ci had relied on the true nature of his Primordial Spirit to solve problems.
Two days ago, when his thoughts had shifted to the Yellow Springs Secret Mansion, he witnessed Xin Yi's heaven-shaking Thirty-Six Heavens divine ability. Comparing and contrasting it with the Inner Void, he gained some insights. When he momentarily ran into matters he didn't understand, he handed them over to the Primordial Spirit to sort out.
This process was unproblematic. The Primordial Spirit took on this "job" and began working hard to deduce it—well, how could the profundities of the Thirty-Six Heavens divine ability be so easily cracked?
Back and forth over the span of two days, the operation of the Primordial Spirit's true nature consumed an unknown amount of Innate Vital Energy.