PS: Thank you book friends for rewarding 100 coins for whom!

It was already night when the two returned to the beach, sent Liu Ruohan back to the Yalong Bay Seaview Hotel, said a bunch of good words, and made a guarantee that they would come back safely, Ye Lingtian dived into the sea again and came to the mysterious seabed crack.

However, this time, Ye Lingtian did not use the water avoidance bead again, but directly performed the water escape technique, and his entire body suddenly disappeared into the sea water, merging with the vast sea.

Circling around the crack, Ye Lingtian did not hesitate for a moment, and fled directly, and after a short time, he had already reached the bottom of the crack, looked around, and saw that the crack that was originally tens of meters wide had suddenly shrunk to more than ten meters wide, two or three meters high, and the direction was leading to Yalong Bay.

Ye Lingtian didn't make any stops, he fled along the crack, and after walking for about fifty or sixty miles, he felt that the temperature of the sea seemed to be a lot lower, and the crack was getting narrower and narrower, and in the end it was only one or two meters wide, and it was no longer forward, but slightly inclined upward, like a slope.

Probing his divine sense along the narrow crack, Ye Lingtian was surprised to find that the end of this slope turned out to be a cave without water, the cave was very vast, and the aura was abundant, he couldn't help but be overjoyed in surprise, and hurriedly sped up, and soon stepped out of the water along a gravel shallow.

Emerging from the sea, he climbed up a narrow passage for another one or two hundred meters to reach the cave. The cave was pitch black, but it was still like day for Ye Lingtian, and he looked around, the cave was very large, nearly the size of a football field, and the cave was filled with cold fog, even Ye Lingtian, who was cultivating in the late stage of foundation building, couldn't help but feel the cold air pressing.

Releasing his divine sense, Ye Lingtian was surprised to find that his divine sense could not penetrate the cave wall, pondered for a moment, and remembered that most of the distance was a slope when he came just now, and immediately reacted, this cave should have been located above the water level, in the belly of a large mountain somewhere.

However, there was nothing in the cave, where did this abundant aura and cold mist come from? Curious, Ye Lingtian walked towards the depths of the cave while slowly searching his divine sense along the cave wall.

Walking all the way to the deepest part of the cave, Ye Lingtian found a crack in the bluestone three or four meters long and palm-wide at the bottom of the cave, and a trace of rich aura was slowly and continuously emerging from the gap. Overjoyed, Ye Lingtian hurriedly probed his divine sense into the gap, and found that there was a different world behind this gap.

As soon as his mind moved, the flying sword suddenly appeared in his hand, and he cut and dug along the gap, and the bluestone that had been moistened by the aura and cold for many years, and the bluestone that had been as hard as iron was cut away like a curd bamboo, and after a while, he dug out a hole more than one meter wide and two meters high.

Passing through the entrance of the cave is another cave, but this cave is much smaller, and the depth of the cave is just the opposite of the slope that Ye Lingtian went up all the way when he came from the bottom of the sea, but it is a downward slope.

After Ye Lingtian released his divine sense to investigate, he walked down the cave. The cave was rugged and bent, and it took more than ten miles to reach the bottom, Ye Lingtian estimated that it should have reached below sea level by now.

After turning a few bends along the cave, what is presented in front of you is a pool of water that is more than 100 meters wide, the white mist lingers on the water surface, the pool water can not have any ripples, the silence is a little frightening, the cold aura spreads throughout the space, and the surrounding stone walls are full of layers of thick ice rocks.

However, in stark contrast to the ice rocks on the surrounding rock walls, the water in the pool shows no signs of freezing, despite the cold weather.

"Hantan!" Ye Lingtian couldn't help but cheer out in surprise. The experience of his previous life reminded him that in order to form a cold pool, there must be a spiritual spring nurtured by the earth's leyline essence at the bottom of the pool, and it is precisely because of the earth's leyline essence that even if the temperature of the spring is extremely low, it will not freeze, and there must be rare spiritual grass around the spiritual spring!

Resisting the urge to jump into the cold pool to find the spirit grass, Ye Lingtian cautiously probed his divine sense into the cold pool, and found that this cold pool, which was only a hundred meters in diameter, was actually thousands of meters deep. Think about it, this spiritual spring is estimated to have existed for I don't know how many thousands of years, and the spring water flowing out has nowhere to go, and finally formed this cold pool, which accumulates over time, accumulates more and more, and the pool water is getting deeper and deeper.

After repeatedly probing in the cold pool with his divine sense, and after confirming that there was no danger, Ye Ling Tiancai jumped into the cold pool with a "poof!" and quickly dived down with a water escape. ,

When I was on the shore, I couldn't see the water quality of the cold pool because of the lingering cold. However, when he went down to the middle of the cold pool, Ye Ling Tian found that the water in this pool was very clear, and the underground cold pool that exuded an extremely cold breath was not as terrifying and dark as he imagined, but in a transparent area, like fireflies in a dense fog, there was a little bit of blue light from time to time.

When he dived to a depth of more than eight hundred meters, even with the cultivation of the late stage of foundation building, Ye Lingtian still felt a strong chill, this chill was not piercing, but deeply pierced into the Yuan Shen, Ye Ling Tian felt that his Yuan Shen was about to freeze.

The temperature here has reached the limit of what he can bear, but seeing that it is about to end, he is very unwilling to give up like this, so he can only slow down, quickly run the true yuan in his body, and take out the water beads to block the cold outside, then he feels better, gritted his teeth and continues to dive.

The 100-plus meters were very slow, even more than the previous 800 meters. Finally, Ye Lingtian, who was almost a little unbearable, saw the bottom of the pond in a ring, which was covered with crystal ice crystals, but in the center was a spring shaped like a volcanic crater, bubbling out a frost-white trickle, and then slowly dissipated into the surrounding pool water like smoke.

"Sure enough, it's the legendary Earth Vein Spirit Spring!" Seeing this scene in front of him, Ye Lingtian couldn't help but be shocked, and under the great joy, the chill all over his body seemed to have decreased a lot.

What flows out of this spring is not spring water, but the purest and coldest leyline essence, that is, this is a spring of the earth's leyline spiritual vein. This kind of spiritual vein is rare even in the cultivation realm, and if a sect can build on this kind of spiritual vein, then there will be an inexhaustible supply of spiritual energy. If you can seal the surrounding space with great mana, it can become a rare cave blessed land in its own right.

Fortunately, this spiritual spring is located below the sea level, and there is a big mountain above it, otherwise in today's society, under the guise of economic development, indiscriminately cutting down and deforesting everywhere, indiscriminately developing, demolishing and building, and building and demolishing, even if it is not destroyed, it would have been polluted long ago.

It's just that Ye Lingtian couldn't understand why there was such a cold spring at the bottom of the tropical seabed? But these were not what Ye Lingtian wanted to study, what he needed was the spiritual grass that grew on the edge of the spiritual spring.