Discussions of the Immortal Path and insights gained after the breakthrough could only briefly interrupt the exploration and development of the lake.
Once everything had settled down, Uchiha Yu continued searching deeper into the lake.
Fortunately, when Uchiha Yu broke through, the wind-aspected Natural Energy had erupted into turmoil, affecting nearly half the lake's surface. The source of the Natural Energy they sought lay within that area.
Following the location he had sensed on the day of his breakthrough, Uchiha Yu easily found the source of the Natural Energy. It was a fresh fissure concealed beneath layers of fallen rocks.
Judging from the surrounding terrain, the fissure had formed during the landslide.
When the entire mountain peak opposite them had crashed down and violently struck the valley floor, the tremendous shock had spread outward from the impact point, focusing at a bend in the valley and forcibly tearing a crack through the thick rock strata.
Uchiha Yu also discovered that the peaks on both sides of the valley were sedimentary rock, while large amounts of limestone were distributed around the fissure. This showed that the crack was extremely deep, extending into a different layer of rock.
Moreover, the fissure was a spring of running water. Springwater rich in Natural Energy flowed endlessly outward, bringing Natural Energy to the entire lake.
Uchiha Yu collected some springwater and brought it ashore to study with Miwa Masayo. Both of them detected a faint fishy smell, proving that there was abundant life at the source of the spring.
Uchiha Yu said with certainty, "It should connect to an underground river. There are quite a few animals in that river, but we can't determine the exact source of the Natural Energy for now."
"Unless we widen the fissure and drill inside for a deeper investigation."