With that, Alan went into the water with the other two.

Although they are all dressed in camouflage, because of the "air film" made by Alyssa, once they enter the water, it is like a bubble to isolate the surrounding water, so as long as they are not too far apart, they can still clearly distinguish their respective positions. It's just that compared to the real bubbles, the bubbles that wrap around them sink downwards instead of floating upwards.

As soon as I entered the water, the light immediately dimmed a lot.

Although Alyssa's magic helped keep them warm, Eren could still clearly feel the chill coming through the air every time he moved, and it didn't take long for the air around them to drop to about the temperature of water. However, with this magic as a guarantee, they don't need to use underwater breathing until the air in it is exhausted, which helps them save some mana.

They slowly sank, and schools of fish swam past them around them, and occasionally sharks swam towards them, almost hitting them several times, which made Alan break out in a cold sweat.

Fortunately, it was all a false alarm. Eventually, they landed at the bottom of a lake with a wide view.

There are no aquatic plants growing in this area, and the bottom of the lake is full of fine sand, which is very comfortable to step on. Occasionally, some small fish in the sand will be frightened and run around, causing itching on the soles of their feet.

As Frey said, all the eyes can see are sharks who are moving freely. They seem to be hunting, cooperating in twos and threes, some are responsible for chasing behind them, and some are responsible for outflanking and intercepting from both sides, with a clear division of labor and tacit cooperation. But after a closer look, Alan noticed that they didn't seem to be just hunting, as if they were still raising these fish, because there were many obvious opportunities for them to be missed, and they would only prey on those that were big enough.

"It seems that their intelligence is not as low as people always think...... Their behaviour means that they think far ahead, or at the very least, that their leaders are wise. Alan thought.

They walked towards the center of the lake, and it wasn't long before they came to the edge of an underwater forest. That's why they saw the lake on the shore of the dark green color.

The leaves of these aquatic plants are broad and long, rooted in the bottom of the lake, and grow vertically upwards, all up to ten meters in length, and drift with the fluctuations of the lake. It seems to be the habitat of many fish, and Alan simply counted them, and found that there are more than a dozen species of fish living at the bottom of this forest alone.

However, these aquatic plants also obscured their view, and they just covered the entire center of the lake impartially, making the atmosphere in the vicinity a little eerie.

The three of them carefully removed the aquatic weeds and entered the interior of the underwater forest.

The ground around here is no longer sandy, but a little sticky dirt. This couldn't help but make Alan a little worried, because every step they took, a part of the mud would be brought up, leaving them in danger of their whereabouts being exposed. Fortunately, the area of the forest was not too large, and it was not long before they were able to cross the entire forest, and their vision was open again.

The sight in front of them surprised all three......

Instead of hordes of mermaids, you will see a strange building that has never been seen before...... It was an irregular cylinder, made of unknown materials, and it had a rare reddish-brown color, it looked at first glance like a tall tower standing in the water, and it looked like a huge deep-water plant growing straight up from the bottom of the lake, it was narrow at both ends, but the middle part was very fat, if you described it as Alan's idea, it was "like an old man with a big belly on his back"; not only that, but there were cave-like things on top of this strangely shaped building, of various sizes, Dense, like a honeycomb.

But that's not the weirdest thing, the one that caught Allen's attention the most was its bottom. I thought that its foundation was buried at the bottom of the lake, but after careful observation for a while, I realized that it was actually suspended in the air...... In other words, such a large "tower" turned out to be floating in the water. And the part that was empty from the bottom of the lake was a small altar-like building, on which something was shining brightly......

"That's it!" Rare tugged at Alan's arm, motioning for him to look that way.

But Alan couldn't be happier—there were at least ten mermaid guards hovering around the altar, each less than half a meter apart, and it was extremely difficult to get close to the altar under such a tight guard.

The guards held the same harpoon-shaped weapons in their hands, and the cold was slightly exposed.

And unlike on the shore, this is their field, and they are as light as swallows when they move one by one, and the resistance of the current seems to them to be non-existent.

"It's a bit tricky...... "if you approach so rashly, these bubbles are so big, they'll immediately expose the target." ”

Apparently Frey was thinking the same thing as him, only to see him write on the sand with his wand, "Lift, try to get closer, as soon as possible." ”

Alan immediately understood what he meant: the only way to get there was to disarm Alyssa's magic and slip through the cracks above the guards' heads in disguise. Of course, all this is on the premise of being able to endure the cold and biting water of the lake.

Riel hesitated when he saw the proposal...... After staying underwater for so long, their bodies had already begun to get cold, and although they had managed to adapt to the freezing temperature, it was still a little unbearable for them to be active in this environment for a long time.

Time is running out for them.

Frey was the first to clear the bubbles, then kicked his feet to about the same height and swam forward. Seeing this, Alan and Riel hurried to follow.

Although the air that enveloped them just now had already turned cold, but when Alan was submerged in this water, he understood what it meant to be cold and piercing, if it weren't for the disguise spell on the surface of his body, he should be able to clearly see the goosebumps on his body now...... The temperature of the water was so low that it froze so cold that it gave him a little headache, and every time he swam forward, he would have a slight cramp.

But now they are not allowed to give up, no matter whether they succeed or fail, they have to try. He could only grit his teeth and persevere.

Seeing that he was getting closer and closer to these merman guards, Allen's heartbeat was getting faster and faster, and as he swam past them, Alan tried to keep his movements as light as possible, and simply held his breath completely to avoid a little bubble coming out of his mouth.

But despite this, there was an accident when they first approached the group of mermen......

I saw that a few mermaids in the vicinity seemed to see them, and when Alan was still a few meters away from them, they began to stare at their location, and then suddenly raised their hands and swam towards them with the weapons in their hands......

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