Although the sky was extremely dark at this time, and the bottom of the river was almost pitch black, Shen Luo still quickly found the approximate location of the black stone group with his good memory.

He had already prepared, and directly took out a "treasure hunting talisman" and a yuan stone from his chest.

At the moment, he was at the bottom of the river, but the talisman treated with tung oil was attached to the palm of his hand, and the color of the runes on it did not fade in the slightest.

Shen Luo secretly breathed a sigh of relief, and the operation of Xiaohua Yang Gong urged.

The light on the "treasure hunting talisman" flashed, but it did not form the desired white light cluster, which obviously failed.

After a few breaths, Shen Luo tried all the remaining "treasure hunting talismans", but unfortunately good luck did not come again, and the familiar scene did not reappear.

Shen Luo was not discouraged, after all, the area of this black stone is not large, if there are really treasures here, it is much less difficult than searching for the rocks all over Hanoi without a clue.

He was about to stuff a few waste talismans in his hand back into his arms, when a whirlpool suddenly appeared in the surrounding river, causing him to stumble for a moment, and a few talismans in his hand came out of his hand and were swept away by the surging river.

Shen Luo didn't care about those waste talismans, and after surfacing for a breath, he continued to swim towards the black stone.

A scrap talisman made a few circles in the river and happened to float above the black stones.

At this moment, the mutation is reborn!

A layer of dark blue light suddenly appeared on more than a dozen black stones, which was quite conspicuous at the bottom of the river, and these dark blue lights quickly condensed together, forming a dark blue light curtain several zhang in size, enveloping all the stones in it.

The talisman slammed into the blue curtain, silently torn apart.

Shen Luo's eyes widened, and his figure immediately stopped.

The scene in front of him reminded him of the magic circle set up by Yu Yan and other immortal masters in the dream when they worked together to fight against the wolf king.

Of course, compared to the Liuhe Fire Array formed by Yu Yan and the others, the dark blue curtain in front of him could not be compared to the same in terms of range and power momentum.

He stared intently at the dark blue curtain in front of him, and after a slight groan, he dug out a bowl-sized stone from the bottom of the river, waved his hand and threw it over.

The stone slowly crossed an arc in the river and smashed against the blue curtain.

With a "bang", the stone just touched the light curtain, and it immediately shattered, turning into a small piece of rubble, and exploded towards the surroundings.

When Shen Luo saw this scene, his heart was cold, and he picked up a stone the size of a human head from the bottom of the river and threw it hard.

When the much larger stone touched the blue curtain, it also burst open again, looking extremely fragile, and the blue curtain did not move at all, not even flickering.

He didn't try again, he swam towards the surface of the river, and after surfacing and taking a few big breaths, he quickly calmed down.

The torrential rain poured down on the river, and the raindrops the size of beans kept hitting his face, which was quite painful, but fortunately, the flow rate of the river did not change much for the time being.

Shen Luo rested for a while and dived back to the bottom of the river again.

But the faint blue curtain on the black stone group, I don't know when, has disappeared.

Everything just now was like a dream.

Although Shen Luo felt strange in his heart, he recalled the power of the dark blue light curtain, and did not rush closer.

After a moment's thought, he picked up a stone from the bottom of the river again and threw it with all his might.

As soon as the stones fell above the stone group, the faint blue light on the more than a dozen black stones flashed, and more than a dozen rays of light flew out, instantly condensing into that dark blue curtain again.

The stone smashed against the light curtain and shattered silently again.

Shen Luo chuckled in his heart, and was afraid for a while.

The faint blue curtain disappeared, and it seemed that it was only a hidden track, and as long as there was interference from external forces, it would immediately appear.

A little under his feet, the man stepped back a distance again, his eyes fixed on the dark blue curtain.

There are actually people in this group of black stones who have laid out a formation, there must be something strange in it, and the nameless book of heaven may be hidden here.

As soon as he thought of this, he took out a small thunder talisman from his arms, as well as a yuan stone.

This dark blue curtain seems to be impossible to crack with ordinary means, and he only has the small thunder charm on his body now, which may be effective.

Shen Luo runs the small Yang Gong and urges the small thunder talisman.

The small thunder talisman cracked with a "snort", and a white lightning bolt emerged.

Shen Luo's body was instantly paralyzed, his hands and feet trembled uncontrollably, and his whole body seemed to be pierced by countless small needles, which was extremely painful.

"Oops, I forgot the ...... that the power of thunder and lightning can transmit in the water"

His consciousness was still there, and he was annoyed in the bottom of his heart.

However, Shen Luo didn't suffer for long, after the white lightning appeared, it immediately shot forward, and the pain in Shen Luo's body was immediately greatly reduced.

The white lightning instantly crossed a distance of seven or eight zhang and hit the dark blue light curtain, like a white snake, drilling into it.

The dark blue light curtain immediately trembled violently and flashed wildly, and the light curtain, which was not already thick, became thin at a speed visible to the naked eye, and it was about to completely collapse.

However, at this moment, the white lightning first exhausted its strength and disappeared without a trace.

Shen Luo's eyes narrowed, and he reached into his arms with a hand that was still a little trembling, took out the second small thunder talisman, and immediately urged it.

The small thunder talisman shattered, and another white lightning bolt appeared out of thin air.

Shen Luo's body became paralyzed again, and his hands and feet began to tremble wildly, but he ignored these and looked straight at him.

Lightning flew out and struck the blue curtain again.

The already thin dark blue light curtain was struck by a white lightning bolt again, and immediately trembled again, quickly becoming thinner, and finally with a "bang", it turned into countless dark blue light, drifting away.

But at this moment, the middle of the dozen or so black stones, the one at the nose of the skull pattern, glowed with a faint white light, but it quickly disappeared.

Although the white light appeared for a very short time, it did not escape Shen Luo's eyes.

Shen Luo didn't rush closer, picked up a stone from the bottom of the river again, and threw it over.

The stone did not shatter this time, but fell on a black stone, tumbled a little, and fell to the bottom of the river.

With joy in his eyes, he floated to the surface and breathed a sigh of relief, then returned to his original place, and swam forward with confidence, digging around the black stone that emitted white light, searching carefully inch by inch.

At this time, perhaps due to heavy rainfall, the river suddenly became turbulent.

Shen Luo's body was staggered, and he hurriedly grabbed the black stone before he stabilized his footsteps.

His heart sank, and he hurriedly accelerated the speed of exploration.

According to this trend, at most he is looking for a half-burnt incense and has to go back, otherwise the danger is not small, but now this protection circle has been destroyed by himself, and under the turbulent water, it is difficult to guarantee that it will remain the same on the second day.

Besides, with this torrential rain, whether it can stop on the second day is still a matter of two words.

After a while, he touched a stone hole the size of a bowl next to a black stone.

This cave was different from the mud caves he had touched before, the entrance was smooth and round, obviously not a natural formation, as if it was artificially carved.

Shen Luo was overjoyed and hurriedly put his hand in.

The inner wall of the cave is also very smooth, extending into the ground in the shape of a cylinder, and the cave is also full of sediment.

Fortunately, the sand did not solidify, and his hand was able to reach into it completely, and when he felt it carefully, he found nothing, so he continued to dig his arm down.

The stone cave was quite deep, and Shen Luo almost pressed his body to the bottom of the river, only to barely reach the bottom, and his fingers touched a hard, flat thing.

Without much hesitation, he grabbed the thing and pumped it up.

But this thing was hidden too deep, and it was full of mud and sand, and there was a lot of resistance, so this pump did not twitch.

At this time, the speed of the water increased a lot, and he almost couldn't stabilize his body a little.

"Fight!"

Shen Luo turned his heart sideways, lay his upper body on the ground, reluctantly stretched both hands in, grabbed the thing, and pulled it with all his might.

With a "poof", he pulled the thing out of the hole.