While this approach is effective, it obviously requires a certain amount of practice. Weng and his son-in-law slowed down, and Jiao Ming reported the specific locations of all the 'anchor bars' sensed within the 200-meter diameter sphere. The Crocodile Duke tried teleportation to destroy its effectiveness.

With the strength above the Nine Rings, it is not difficult to cast spells in the air. However, the goal is to accurately estimate the distance and cast spells without the aid of line of sight, making it difficult for even a crocodile Duke to grasp the essentials in a matter of minutes.

What's more, in the case of ambiguity in the direction of Jiao Ming's finger and estimation of distance numbers. It can be said that the difference is thousands of miles, and the anchor rod the size of a thermos cup is said to be biased in the past.

Along the way, the two tried dozens of them. The first success rate is less than 20%, and most of them are at the same level or straight up and down. The success rate within five times is forty percent, and it all depends on the crocodile duke's expansion of the enchantment range to a two-meter diameter sphere. Fortunately, this anchor rod is a precision instrument, and it will go down if the material properties change slightly.

Jiao Ming thought about it and sighed helplessly. "Father-in-law, you can't go on like this. ”

"Do you have any other way?" asked the Crocodile Archatic. With such efficiency, it is indeed difficult to destroy enough anchor bars in time during the battle to restore the spatial teleportation ability.

"That...... Do you have an impression of the three-dimensional Cartesian coordinate system?" Jiao Ming asked tentatively.

This is the content of the middle school mathematics level, and it has not yet entered the compulsory education category of the Crocodile Collar, and is only taught in a small area at the Crocodile Collar Magic Research Institute. Jiao Ming didn't think that a person of the age of Duke Crocodile could still learn this thing, so he would give a step.

"I was a little impressed, but I can't remember exactly. Tell me more about it. ”

Grabbing a stone casually, on the side wall of the cave, Jiao Ming explained what the coordinate system was, and finally agreed that the three directions of the front, the left and the top were positive numbers, and the reverse was negative.

The crocodile duke scratched his scalp and asked Jiao Ming to speak again.

"Just do it and you'll get it. Jiao Ming secretly rolled his eyes, and positioned the nearest anchor tie rod in the form of the previous XX, left YY, and upper ZZ.

The crocodile duke was stunned for a while, and as soon as he raised his hand, the whole cave shook slightly. Jiao Ming thought it was the old father-in-law who was powering at first, but when he noticed that the Holy Demon Sea had no suction effect, he realized what the situation was.

"Earth...... Earthquake! Let's hide. ”

In this cave environment more than ten kilometers underground, Jiao Ming's only thought was to die, and the sound of chickens and cubs also appeared. And when he leaned against the wall to stabilize his body and searched back and forth for a place to hide, he noticed that the crocodile duke had a somewhat strange look in his calm eyes. Only then did Jiao Ming remember that he was no longer an ordinary person, and the feeling of heart emptiness caused by fear suddenly disappeared.

"What is an earthquake?"

"Ahem, in my hometown, it's a natural disaster where the earth shakes. It seems that this world has never happened, at least in the written history. I guess it's the planets that make up the difference, but I can't say for sure. I didn't expect to encounter it in this so-called core holy place. ”

The crocodile duke nodded, and stood still in the increasingly violent shaking.

After about a few tens of seconds, the shaking stopped. The cave is a relatively hard rock formation, and it has not changed much. But judging by the faint sound in front of the cave, there have been collapses in more than one place.

Considering Master Emily's ordinary physique, Jiao Ming quickly wrote a note and sent it to the rear. I was relieved to get a reply from Ping'an. The two continued to practice cooperation as they walked, and after the crocodile duke became familiar with the operation of the Cartesian coordinate system, the efficiency improved.

However, it is estimated that it will still take ten minutes to meet the standard conditions given by Emily. The anchor pole in front of it is even denser.

Compared with the anchor pole, a more difficult problem soon appeared in front of Weng and his son-in-law: the cave was blocked.

Judging from the fresh traces of stubble, it was caused by the previous earthquake. If the space is normal, a short space teleportation will solve the problem. But now, it seems that the only way to do this is to rely on stupid solutions.

First, the micro-space teleportation detection was used to determine that the collapse area was only about five meters, and the two of them were not hypocritical, and they did it directly. The crocodile duke's hands lit up with a dazzling light, and with the effect of rapid movement, it seemed that there were a few more hands out of thin air. It's just that the posture of the dog planing is a bit low-end, which makes people play. And Jiao Ming's side, the best efforts to communicate with the water system magic medium only made his hands appear faintly faint, like a small flashlight with insufficient power.

It took twenty minutes to dig a path through the pile of broken rock and gravel, distracted by two new small collapses. Both of them were fingernails stuffed with black mud, gray and dirty, and their images were completely ruined.

Jiao Ming was very twisted by the rough and sticky feeling caused by sweat mixed with dust on his skin. The crocodile duke didn't care, waved his hand and continued to move forward.

A few hundred meters later, there was another small collapse. Not far after digging through, the cave was blocked by a smooth cliff. Detection determined that the original cave had moved five meters away. This is actually a rock fault.

I had no choice but to keep digging. And halfway through the digging, the surroundings shook slightly again. To be on the safe side, the two hurriedly exited the cave with the thickness of the ventilation pipe.

"Another earthquake?" asked Duke Crocodile.

"Hmm. Jiao Ming nodded, of course he would not use the concept of 'aftershock' to show erudition.

After more than ten seconds, the vibration stopped. After waiting for more than ten seconds without incident, the two were about to dig into the small hole and continue digging, when the vibration came again. However, this time, it was much weaker, and there were also violent convulsions and shocks in the Holy Demon Sea.

The crocodile duke looked up, his gaze looking through the rock formations. "It's a fight, at least two water systems above the Nine Rings. ”

"What are we going to do?"

After a moment of closer induction, the Crocodile Duke shook his head. "At least ten high rings of the water system are fighting, let's not wade into muddy waters. Do you have any suggestions?"

"At least the positions of the other teams were confirmed. It's better to find a fork in the road, wait for the battle to end, and try to move in the direction of the battlefield. Perhaps the identities of both parties can be determined from the clues. ”

"That's it. ”

Ignoring the slight vibrations of the battle, the two continued to dig their caves. Probably with some experience, the tunneling speed has increased significantly. A few minutes later, the battle in the distance ended, and the outcome was impossible to guess. Soon, the two of them also entered the other side of the staggered cave and ran wildly.

Luckily, there was no collapse for another kilometer, and there was a fork in the road that led to the top. Turning into a fork in the road, it took five minutes to dig through a small collapse again, and then about a kilometer forward, but encountered a collapse of more than 20 meters. This place is about four kilometers away from the previous battlefield, but unfortunately the cave extends in the wrong direction.

While this approach is effective, it obviously requires a certain amount of practice. Weng and his son-in-law slowed down, and Jiao Ming reported the specific locations of all the 'anchor bars' sensed within the 200-meter diameter sphere. The Crocodile Duke tried teleportation to destroy its effectiveness.

With the strength above the Nine Rings, it is not difficult to cast spells in the air. However, the goal is to accurately estimate the distance and cast spells without the aid of line of sight, making it difficult for even a crocodile Duke to grasp the essentials in a matter of minutes.

What's more, in the case of ambiguity in the direction of Jiao Ming's finger and estimation of distance numbers. It can be said that the difference is thousands of miles, and the anchor rod the size of a thermos cup is said to be biased in the past.

Along the way, the two tried dozens of them. The first success rate is less than 20%, and most of them are at the same level or straight up and down. The success rate within five times is forty percent, and it all depends on the crocodile duke's expansion of the enchantment range to a two-meter diameter sphere. Fortunately, this anchor rod is a precision instrument, and it will go down if the material properties change slightly.

Jiao Ming thought about it and sighed helplessly. "Father-in-law, you can't go on like this. ”

"Do you have any other way?" asked the Crocodile Archatic. With such efficiency, it is indeed difficult to destroy enough anchor bars in time during the battle to restore the spatial teleportation ability.

"That...... Do you have an impression of the three-dimensional Cartesian coordinate system?" Jiao Ming asked tentatively.

This is the content of the middle school mathematics level, and it has not yet entered the compulsory education category of the Crocodile Collar, and is only taught in a small area at the Crocodile Collar Magic Research Institute. Jiao Ming didn't think that a person of the age of Duke Crocodile could still learn this thing, so he would give a step.

"I was a little impressed, but I can't remember exactly. Tell me more about it. ”

Grabbing a stone casually, on the side wall of the cave, Jiao Ming explained what the coordinate system was, and finally agreed that the three directions of the front, the left and the top were positive numbers, and the reverse was negative.

The crocodile duke scratched his scalp and asked Jiao Ming to speak again.

"Just do it and you'll get it. Jiao Ming secretly rolled his eyes, and positioned the nearest anchor tie rod in the form of the previous XX, left YY, and upper ZZ.

The crocodile duke was stunned for a while, and as soon as he raised his hand, the whole cave shook slightly. Jiao Ming thought it was the old father-in-law who was powering at first, but when he noticed that the Holy Demon Sea had no suction effect, he realized what the situation was.

"Earth...... Earthquake! Let's hide. ”

In this cave environment more than ten kilometers underground, Jiao Ming's only thought was to die, and the sound of chickens and cubs also appeared. And when he leaned against the wall to stabilize his body and searched back and forth for a place to hide, he noticed that the crocodile duke had a somewhat strange look in his calm eyes. Only then did Jiao Ming remember that he was no longer an ordinary person, and the feeling of heart emptiness caused by fear suddenly disappeared.

"What is an earthquake?"

"Ahem, in my hometown, it's a natural disaster where the earth shakes. It seems that this world has never happened, at least in the written history. I guess it's the planets that make up the difference, but I can't say for sure. I didn't expect to encounter it in this so-called core holy place. ”

The crocodile duke nodded, and stood still in the increasingly violent shaking.

After about a few tens of seconds, the shaking stopped. The cave is a relatively hard rock formation, and it has not changed much. But judging by the faint sound in front of the cave, there have been collapses in more than one place.

Considering Master Emily's ordinary physique, Jiao Ming quickly wrote a note and sent it to the rear. I was relieved to get a reply from Ping'an. The two continued to practice cooperation as they walked, and after the crocodile duke became familiar with the operation of the Cartesian coordinate system, the efficiency improved.

However, it is estimated that it will still take ten minutes to meet the standard conditions given by Emily. The anchor pole in front of it is even denser.

Compared with the anchor pole, a more difficult problem soon appeared in front of Weng and his son-in-law: the cave was blocked.

Judging from the fresh traces of stubble, it was caused by the previous earthquake. If the space is normal, a short space teleportation will solve the problem. But now, it seems that the only way to do this is to rely on stupid solutions.

First, the micro-space teleportation detection was used to determine that the collapse area was only about five meters, and the two of them were not hypocritical, and they did it directly. The crocodile duke's hands lit up with a dazzling light, and with the effect of rapid movement, it seemed that there were a few more hands out of thin air. It's just that the posture of the dog planing is a bit low-end, which makes people play. And Jiao Ming's side, the best efforts to communicate with the water system magic medium only made his hands appear faintly faint, like a small flashlight with insufficient power.

It took twenty minutes to dig a path through the pile of broken rock and gravel, distracted by two new small collapses. Both of them were fingernails stuffed with black mud, gray and dirty, and their images were completely ruined.

Jiao Ming was very twisted by the rough and sticky feeling caused by sweat mixed with dust on his skin. The crocodile duke didn't care, waved his hand and continued to move forward.

A few hundred meters later, there was another small collapse. Not far after digging through, the cave was blocked by a smooth cliff. Detection determined that the original cave had moved five meters away. This is actually a rock fault.

I had no choice but to keep digging. And halfway through the digging, the surroundings shook slightly again. To be on the safe side, the two hurriedly exited the cave with the thickness of the ventilation pipe.

"Another earthquake?" asked Duke Crocodile.

"Hmm. Jiao Ming nodded, of course he would not use the concept of 'aftershock' to show erudition.

After more than ten seconds, the vibration stopped. After waiting for more than ten seconds without incident, the two were about to dig into the small hole and continue digging, when the vibration came again. However, this time, it was much weaker, and there were also violent convulsions and shocks in the Holy Demon Sea.

The crocodile duke looked up, his gaze looking through the rock formations. "It's a fight, at least two water systems above the Nine Rings. ”

"What are we going to do?"

After a moment of closer induction, the Crocodile Duke shook his head. "At least ten high rings of the water system are fighting, let's not wade into muddy waters. Do you have any suggestions?"

"At least the positions of the other teams were confirmed. It's better to find a fork in the road, wait for the battle to end, and try to move in the direction of the battlefield. Perhaps the identities of both parties can be determined from the clues. ”

"That's it. ”

Ignoring the slight vibrations of the battle, the two continued to dig their caves. Probably with some experience, the tunneling speed has increased significantly. A few minutes later, the battle in the distance ended, and the outcome was impossible to guess. Soon, the two of them also entered the other side of the staggered cave and ran wildly.

Luckily, there was no collapse for another kilometer, and there was a fork in the road that led to the top. Turning into a fork in the road, it took five minutes to dig through a small collapse again, and then about a kilometer forward, but encountered a collapse of more than 20 meters. This place is about four kilometers away from the previous battlefield, but unfortunately the cave extends in the wrong direction.