Under Xu Fei's preoccupation with the use of internal force to urge the "listening to sound and identifying position" exercises, the direction of the underground water vein was gradually confirmed. There are indeed underground water veins passing under this passage of mine, but they are not in the same direction, but criss-crossed.

Therefore, only a small section of the ground and the underground water vein coincide, and the thickness of the ground stone wall here has just been explored by Xu Fei, which is a thicker stone wall, with a thickness of more than three zhang. If you want to break through such a thick stone wall, do you have enough energy?

But this glimmer of life was like the light of hope illuminating Xu Fei's heart, and he was about to transform the Ruyi Divine Soldier into a two-handed hammer. The hammer head resembles a giant olive pit, with two sharp ends and an oval shape in the middle.

This kind of hammer is best suited for tackling tough problems, and it is much more effective with the aid of this equipment than with bare hands. Xu Fei once again pushed the "golden light is not bad" energy to the extreme, picked up the heavy hammer from behind him, and slammed it into the stone wall on the ground.

With a "boom" sound, the ground debris flew wildly, and this blow had the power of opening a mountain and cracking stones, smashing a stone pit half a hammer depth on the ground. If this hits an ordinary stone surface, I am afraid that more than two zhang of the surrounding area will be beaten into powder, and the depth of the stone pit is afraid that it will be more than half a person deep.

But such a big force only has such a small effect. Just because the moment the hammer hit the stone surface, he felt that there was a strong force to resist the strength on the hammer, and the power of his full blow was greatly reduced.

The masters of the Hua Han Kingdom are all energetic powerhouses, so all the restraints of the Royal Secret Passage are set for the use of energetic energy. No matter how capable and strong the master is, he will never be able to get out. Although Xu Fei only smashed a hammer, he knew that with such a little bit of excavation, it would be useless after all.

I was just about to smash the second hammer, but I suddenly thought that I had just explored the temperature of the surrounding rock walls to determine the terrain, and I felt extremely resistance. By the time the terrain was fully confirmed, it was exhausting.

However, when he used the internal force to probe the underground water veins just now, there was no obstruction, and those counter-spells did not have any effect at all. This made Xu Fei suddenly have an idea, if the spell is only aimed at strength, and the internal force will not interfere, then you might as well try it with the internal force.

Since Xu Fei's internal strength broke through the second vein of Rendu, he has entered a lot in terms of internal strength, and he can be regarded as a first-class player in the previous rivers and lakes. It's just that because of his young age, he doesn't have much time to accumulate internal strength, so he is not yet in the realm of perfection.

Now he couldn't control so much, he shook the hammer in his hand, roared, and slammed the hammer on the ground with both hands.

I only heard an earth-shattering explosion, and the rubble flew wildly, and the entire heavy hammer had been buried deep in the stone face, showing a large cracked ground like the Eight Immortals Table on the ground. And the hammer head of the heavy hammer smashed deeper than a foot.

This is still a very special material, hard as steel, if it is an ordinary stone, I am afraid that the effect will be doubled. And no matter how hard the stone is, it is still a stone after all, although the hardness is not much better than that of steel, but it does not have the toughness of steel.

Under this blow of condensed internal force, cracks began to appear in the stone face, and the ground around it became loose.

This effect greatly surprised Xu Fei's expectations, and there was a burst of ecstasy in his heart. I didn't expect that those counter spells would not have the slightest effect on the internal force, and I didn't expect that my internal force had progressed to such a state.

In the past, internal forces were used as fuel for energy use or as a catalyst for enhancing effects. And today, the former martial arts and internal skills have once again sung the protagonist, overcoming obstacles on the road to escape.

Xu Fei swung the hammer in his hand like a fly, and the ground that was as hard as steel turned into patches of cracks, and then into piles of rubble. The stone pit on the ground has also become deeper and deeper, and it has become more than half a human deep.

The excessive accumulation of rubble began to affect the power of the hammer bombardment, and the internal forces began to weaken. Xu Fei took a deep breath to adjust his internal breath, cleaned out the rubble little by little, and cleaned up the area around the stone pit.

It's just that it didn't take long to have such a big result, although the stone face here is more than three zhang deep, but as long as you dig down in this way, you will definitely be able to completely break through the stone wall. After Xu Fei meditated cross-legged and recovered his internal strength, he excavated with a hammer again.

In this secret passage, where you can't see your fingers, there is a bombardment like thunder, and then it falls silent. I don't know how many times it has been cycled, and how many hours have passed. That Xu Fei's face was covered with gravel powder, although in this cold secret passage, he was also sweating like rain.

You can't urge the strength to protect yourself, and when you smash the stone with a heavy hammer, the stone slag that splashes around has already broken the clothes in many places. The night suits are tight-fitting suits, and there is no cotton clothing underneath. If it weren't for Xu Fei's internal strength, he would have been unable to withstand it now.

When the pit reached the depth of one and a half people, the sound of the underground water began to become clear. Although Xu Fei is tired, his internal strength is not comparable to his strength, as long as he meditates cross-legged and recovers, it will not take too long to recover as before.

The pit was getting deeper and deeper, and the sound of the underground veins was getting louder. Xu Fei couldn't care much now, and urged the night vision lizard to carefully observe the depth of the stone pit.

I found that I had dug more than two feet, and now I was only a few feet away from the underground water vein, and the sound of the underground water vein was rushing around me. Because the secret passage and the stone pit have the effect of cage sound, the sound of the turbulent water and the rushing sound of the underground river are clearly distinguishable.

At this thickness, Xu Fei didn't dare to dig any more, and used the characteristics of frost strength to sense the temperature to investigate. Sure enough, as I guessed, the stone wall below was only about less than two feet thick. And because of the repeated impacts, the two-foot stone face has many cracks.

Xu Fei jumped onto the stone pit and calmed down for a moment on it, secretly thinking in his heart. If this last stone face is broken, I am afraid that the water of the underground dark river will enter this secret passage in a turbulent manner. Although he is familiar with the nature of water, he has no idea where this underground water vein leads.

It is probably unpredictable to rush into the underground water veins and follow the flow of the water. How sure you are of getting out of this predicament is unknown. If there is a master of the Mo family like Xia Aiqing, he can also guess the whereabouts of the water veins according to the terrain, and now he can only resign himself to fate.

Thinking of this, he transformed the Ruyi Divine Soldier into a large iron vertebrae. The hammer head of this sledgehammer is the size of a small watermelon, and there is a long iron chain behind it.

Xu Fei used the hammer head the size of a watermelon to move it with an iron chain, and at first he could only hear the heavy sound of the wind, but slowly the sound of the wind began to turn into a thunderstorm, and finally it was like the roar of a storm!

Xu Fei aimed the big iron vertebrae at the center of the stone pit, and threw it down violently, with a muffled sound of "boom", the stone face shattered and fell down into the underground water veins. Immediately, a turbulent column of water rushed up, like a spring rain bringing the way of life to this closed place.

Xu Fei, who was hungry and thirsty, raised his head to the sky, opened his mouth and drank the nectar that was scattered like rain, and the whole person seemed to be reborn. Finally opened the passage to the outside, and finally drank the water like nectar.

If ordinary people wear thin night clothes in this winter, and spend most of the day in this cold and dark underground, now they are drenched by the cold groundwater. I'm afraid that before I get ready to go out of the underground water vein, I will already lose my body temperature and die.

But Xu Fei is a disciple of a famous and decent family, and the internal strength and mental method are authentic, and the cold and heat will not invade after urging. In this cold environment, the body exudes steaming heat.

The rapids in the underground veins quickly filled the craters, and then rose little by little in the passages. Xu Fei had already rearranged his clothes, and the Ruyi Divine Soldier turned into two water-splitting thorns and dived down from the stone pit.

In the stone pit, he didn't feel much water impact, but when he reached the bottom of the stone pit, Xu Fei was a little stunned.

As soon as the hand reached the bottom of the stone pit, the rapid impact of the water made the skin feel a huge force. If you dive out from here, the current of this speed will rush you forward at a very fast speed, and if you hit the rock wall, you will be crushed.

The underground water veins are like an evil dragon choosing people to eat.