The cold air of the underground water vein is different from the cold of the peak of the Moyun Mountain Range, the cold of the peak of the Moyun Mountain Range has the unique elegance of the sky, like flowing clouds, but the cold air in the underground water vein is deep and thick, as if it wants to completely squash you. Crushed.

With the four girls, Tian Xian sneaked into a water vein that he found when he came to check last time, but he didn't have time to investigate it due to time constraints, and it was just a bang of luck, but after entering this water vein, Tian Xian immediately felt that this place was different from other places.

It's too cold here.

The fourth girl's body was obviously trembling, although she had the flame aura of the evil eye to protect her, she was not the host of the evil eye, and the most important thing was that now that the power she had cultivated had disappeared, if she used more flame aura to wrap her body, it would definitely cause harm to the four girls.

And even if he only used a part of the flame breath, Tian Xian had to concentrate on it, and even only used the reverse heart trick to fight against the cold qi of the water vein, in this case, Tian Xian himself quickly felt that his body was a little stiff from the cold.

The coldness of this water vein is far greater than that of the previous water vein, and Tian Xian knows very well that he will not feel cold in the northern highlands where it is dozens of degrees below zero, but here his body is stiff, obviously there is something strange about this water vein.

This vein of water is still very long, although the underground river water emits a strange light, and the veins do not appear dim, but all around are impermeable rock walls, and there is no light in front of the exit, and I don't know how long it will take to swim to the end.

Tian Xian swam forward as fast as he could, and after another twenty minutes, Tian Xian felt that it was no longer a way to go on like this, the body of the four girls was obviously stiff, if she hadn't dragged her by herself, I am afraid that she would have sunk to the bottom of the water now.

Gently take the body of the four girls. Tian Xian completely held her in his arms, and the flame power of the evil eye turned to run high on his body, and the amazing heat suddenly spread.

The power of the evil eye directly acted on Tian Xian's body, and the effect was immediately a hundred times better, Tian Xian protected the four girls, and both of them suddenly warmed up. The strong heat caused the surrounding water to brew and splash, and for a while, a mist rolled around.

Carefully condensed the power of the silver water essence, and crossed a layer like a membrane outside the flame power of the evil eye, and suddenly the surrounding water vapor quickly dissipated, and then replenished to Tian Xian's side, and the bubbles on the heads of Tian Xian and the four girls suddenly became a lot bigger.

"I'll take you with you. Tian Xian asked the four girls for advice in a consultative tone.

Leaning on Tianxian's arms, the four girls' hearts were like deer, perhaps also affected by the heat of the evil eye. His cheeks were red, but he answered softly, and said no more.

Tian Xian arranged the flame power of the squint eye and the power of the silver water spirit outside the body, and cleverly sandwiched a layer of cold water in the middle, supplementing the air and blocking the interference of the two forces, ensuring the temperature and vision, and quickly swimming forward again.

Although he was holding the four girls this time, the speed of Tianxian was much faster. The four girls shrank their heads for a while, and finally felt that this was not the time to be shy. Raising his head to help Tianxian pay careful attention to the surrounding situation, the two of them worked together and quickly swam forward.

"It's a long place. Tianxian felt that he had been swimming for a year, and he had not soaked in the water for such a long time when he was playing in the Hantan River Green Beast.

"Brother Tian, is it ...... Have you been moving forward?"

"Of course. Tianxian looked at the four girls a little strangely, and the four girls asked a little strangely. "Is there something wrong?"

The fourth girl thought about it and said: "The underground water veins are usually zigzag and swirling, and the straight water veins are very rare, and the concubine's eyes are inconvenient now, so she can only notice the changes in light and shade around her, Brother Tian, go and take a look around." Are there any traces of manual excavation?"

"Manual excavation?"

Tian Xian was immediately stupid, looking around, Tian Xian felt that the four girls were a little whimsical, although this water vein is not wide, but if it is artificially excavated, it is simply a huge project.

However, since the four girls mentioned it, Tian Xian still came to the edge of the rock wall of the water vein, rubbed the scale dust and mud on the rock wall, and looked carefully, it was just a very ordinary rock wall behind it, and it was soaked in this water vein for a long time, and it was already impossible to see whether it was artificially excavated.

"How's it going?" the fourth girl asked very attentively.

"There is no sign of artificial excavation. Tianxian shook his head, "And even if it is excavated by hand, many years have passed, and it is not easy to find traces now." ”

"I think it's really a water vein dug by hand. ”

The voice of the triangle suddenly interjected, and a ball of light floated out from Tianxian's waist, and the triangle stretched out its body in the water veins, shaking the three arcs of light very excitedly, and laughing loudly: "This water vein...... Obviously it was dug out by hand!"

"What?"

If someone else said it, Tian Xian would believe three points, but Triangle is a bit neurotic......

"Why?" asked Tian Xian with a glimmer of hope.

"Because this vein of water is the same width from front to back!" Triangle began to get excited again, "such a vein of underground water is extremely unnatural, then it is very likely that it was dug artificially! Ah! If it is dug artificially, then there must be some amazing secret hidden at the end of this vein! My master! Let's go quickly! There must be something good waiting for us ahead!"

I feel powerless.

The fourth girl couldn't help but say: "Even if it is a natural water vein, it is not for nothing that the width and narrowness are similar, just this ......"

"Ahh ”

The sentence "hostess" made the four girls blush, but in their hearts, they had praised the triangle hundreds of times, "Yes...... What is the evidence?"

The three arcs of light dancing in the triangle suddenly became rhythmic, and the three small gems in the front section waved rapidly, leaving filaments of light in the water, and soon a very simple and simple formation was drawn.

Using an arc of light to slide back and forth on a straight line on this formation a few times, Triangle said excitedly: "Because this water vein is part of this formation." ”

The fourth girl couldn't see it really, but when she heard this, she was taken aback. "This water vein is part of the formation?"

Tian Xian was even more stunned, stared at the formation for a long time, and suddenly called: "This thing...... How does it look like the map we drew earlier!?"

Triangle said smugly: "Yes my master, the map of the master roughly marks the outline of this formation, we have indeed completed part of this formation when we were on the ground, and later entered the underground water vein. But only this time did I fully sense the full picture of this formation, which is what it looks like now!"

"If, if this water vein is part of this formation, then doesn't that mean ......"

"Yes, my master!" Triangle looked extremely excited, as if he had discovered a new world, "The underground water veins of this underground city are a huge formation, guarding the entire underground city, and there is something on the next level! It's not even quite, it's because we haven't built it out completely, ah, this formation is perfect, I've never seen anything like it?"

"It's not complete, didn't you say you had sensed the whole picture?"

"It's the whole picture of this layer!" "The three arcs of light of the triangle waved quickly on the formation, leaving thin and inconspicuous filaments of light, "This formation is composed of underground water veins, and now I am in the closest layer of water veins to the ground. There are new veins of water further underground, which means that this formation has more structure. It has more complex capabilities, and this also shows that it is not the formation we usually use, it is three-dimensional, and it is a multi-layered structure. ”

It's so complicated! Tian Xian couldn't help but think about it in his heart, Triangle is very powerful in the study of formations, what he said. Then the complexity of this formation can be imagined, there is such a thing under the blood alliance, which is completely unexpected, and this formation has never even seen a triangle, I'm afraid it's not a man-made thing. It is an ancient formation that has been left over from ancient times.

What will happen in this is completely unpredictable.

"What does this formation do, can you decipher it now?"

"I'm afraid this won't work, my master!" Triangle swung the arc of light twice regretfully, "This surface formation shows that it is just a general defensive enchantment, but now that we are in this formation, we have not felt any resistance, so this conclusion is obviously wrong, this formation must have a purpose that we don't know, if we want to understand its situation, the only way to understand it is to continue to go deeper, and when we reach the next level, there will definitely be more discoveries." ”

One more level! Tianxian hesitated slightly.

"Brother Tian. The fourth girl said softly at this time, "Brother Tian doesn't have to worry about the concubine, the front is dangerous and unpredictable, but since the day he entered the prison, the concubine has already been prepared, if one day because of the accident with Brother Tian, the concubine has no regrets, but please don't be entangled by the concubine, the concubine only hopes that the little brother can continue to move forward, don't be burdened by the concubine, and the concubine should help each other." ”

In two simple sentences, Tianxian's heart suddenly brightened, and he couldn't help laughing: "Okay! Since the fourth girl said this, then I would be too petty to hesitate! Hold me tight, remember, if something happens, I will ask the triangle to take you away, absolutely don't hesitate!"

"Brother Tian, rest assured, the concubine will deal with herself. ”

"Good!"

A wave of blood stirred up in his chest, and Tian Xian rushed forward without hesitation, and the situation was just like what the triangle said, and this water vein moved forward a distance, and began to extend significantly to the ground.

Fortunately, even if it went deep into the ground, the light in the water veins was still undiminished, and the surrounding qiē was clearly visible.

Suddenly, a black shadow flashed quickly from Tianxian's side!

"Triangle!" Tian Xian was taken aback, and when he turned around, the shadow had flashed into the distance, and he couldn't help but scream.

"Yes, my master!" the triangle replied quickly, the three arcs of light fully unfolded, and a circle of electric light suddenly lit up around the body, and the triangle disappeared in place with a "bang", and appeared in the distance in an instant, and the three arcs of light wrapped around the thing tightly.

Swinging back to Tianxian's side, Triangle immediately began to pour bitter water, "My master, let Gollum do such a thing next time, my hands are not suitable for grasping this kind of flesh and blood, and if I don't get it, I will be hurt." ”

Tian Xian fixed his eyes and looked at it, his heart couldn't help but feel a slight chill, the triangle caught a strange fish, the length of the chopsticks, the whole body is like a blade, this fish is not big, but it has a pair of hideous eyes and a big mouth, struggling and biting under the constraints of the triangle, very ferocious.

"Let it go. ”

Triangle hurriedly let go of the strange fish, once the fish was unrestrained, it disappeared into the distance in the blink of an eye, and the speed was amazing.

"Brother Tian, was that just now?"

"It's a fish. ”

"Fish?

Tian Xian frowned, looked at the long waterway in front of him, and became more vigilant in his heart, "I didn't expect to come here and actually see living creatures, things living under such cold water must not be easy to mess with, it seems that we should try to find a safe place first, as a temporary shelter in case of an accident." ”

"Is the master looking for a place with air?" Triangle immediately leaned up, "If that's the case, you should be able to see it soon when you encounter a fork in the road and go up." ”

Tianxian was slightly stunned, "How do you know." ”

Triangle was very proud, and quickly waved the arc of light and said: "Rely on the energy direction of the formation and the flow direction of this water vein to deduce, there is a buffer zone, the place where there is the most likely place to isolate the water vein. ”

"Let's go!"

The situation was really as the triangle said, not far ahead, this long water vein appeared a fork in the road, Tian Xian turned upward, and soon saw the bright light of the clearing under the water vein.

The moment he poked his head out of the water, Tianxian had a feeling of being reincarnated.

Here is a small ground, surrounded by water, only a dozen square meters of open space in the middle, the space area is not large, but there are dozens of meters high, all sides are thick rock walls, but there is no feeling of stuffiness.

When she came to the water, Tian Xian took a few breaths, and the four girls also seemed to be relieved, although the breathing under the water was quite smooth, it was not as good as the ground.

Tianxian took out some dry food and was about to eat with the four girls, when suddenly there was a vibration sound under his feet.

"Boom ~~~~~"

The sound came from the bottom of the water, and the ground and water trembled.

"What's going on?" Tian Xian immediately grabbed the fourth girl's hand.

"My master......! It seems to be running on its own, and now it's about to start a periodic tide!"

"Tide!?"

"Hmm...... It's an explosion of energy!"

Recently, it has really become a 4,000 party...... It seems that we need to improve efficiency (to be continued......