Chapter 834: Mysterious passage

At this time, Yan Tian and others have been expertly equipped with solar energy absorption equipment, and then connected to the hole punch. Professor Zhou placed the hole punch on the position where the signal was transmitted, and turned on the hole punch, which was suddenly accompanied by a buzzing sound. The hole punch drilled down quickly like a field mouse digging a hole.

According to Professor Zhou, the hole punch can penetrate about two meters per minute, and it takes a minute of rest for about ten minutes. This mountain is four hundred meters long, so I thought it would take more than three hours to hit the hole to the bottom of the mountain.

So in the middle of the week, he walked to the side and sat cross-legged in the shade.

There is a hunch in the middle of Zhou that this dungeon may not be as simple as Professor Zhou and the others imagined. The majestic aura of the underground is not comparable to any place on the surface. Let’s take the simplest example, even if the spiritual energy absorbed during the mid-week practice with the Spirit Gathering Pill is not as much as the majestic spiritual energy underground! What is even more surprising is that the depth of more than two hundred meters is not deep. Why does the aura only exist in the ground and not flow into the mountains?

The two villagers also said that when they were young, a group of mysterious people came to this mountain. Although they did not confirm that they were looking for this dungeon, the middle of the week still felt that there might be some connection. So in the face of the expedition in the next position, you must keep yourself in the best state in the middle of the week to cope with emergencies.

After more than three hours, the excavator reached the bottom of the mountain, and Yan Tian, ​​who operated the excavator, exclaimed excitedly: "Teacher! It's the end! It's the end!"

Professor Zhou and the others were very excited when they heard the news, and hurried to the entrance of the cave to look down, but the darkness below was so dark that they couldn't see anything at all.

Opened his eyes in the middle of the week, frowned, the mountain capital has been dug through, and the aura hasn't come up yet? This is really strange.

"Yan Tian, ​​how is the soil quality below, can I continue to dig?" Professor Zhou asked Yan Tian.

Yan Tian shook his head solemnly and said: "According to the signal transmitted by unmanned equipment, the underground city is a kilometer away from the ground! And the height of the underground city is more than forty meters. It may be that the loosening of the soil caused a large area of ​​collapse. We must go down and collect soil samples for analysis."

Professor Zhou nodded and said, "That's right. If the soil is too hard or too fluffy, it may collapse during the excavation process. That would be bad."

"But who is going to collect soil samples?" Dong Jiao asked after a few people.

The cave is too deep, it takes more than 400 meters to reach the bottom, and the width is only one meter, and the bottom is extremely dark. Putting aside some psychological fears, just how to go down such a deep height, or how to go up at that time, is a difficult problem.

"We have a rope, we can only slide down the rope and climb up." Yan Tian took out the rope contained in the salute. The drone equipment transmitted the signal but showed that the distance from the top of the mountain was about 1,500 meters. So when they came, they specially prepared a long rope.

"I'll come." At this moment, walking over in the middle of the week, he said with a face as usual.

"Mid of the week? Can you do it?" Several people asked with doubts.

"Can't you come?" Zhou Zhong asked with a smile.

Suddenly a few people stopped talking. To be honest, they really didn't dare to go down, 400 meters, how could they climb up after the afternoon?

Professor Zhou asked to tie all two ropes to the two trunks with double safety, and then throw one of them into the hole and tie the other to the waist of the middle of the week. They will follow the speed of the middle of the week. Put down a little bit, and then said to the middle of the week: "Be careful in the middle of the week. If you feel that you are not working, give us a signal, pull the rope, three short, three long and three short. This is the international rescue signal standard, and we will pull you at that time. Come up."

"Okay, I see." Zhou Zhong didn't care about it. If it weren't for scaring Professor Zhou and others, Zhou Zhong could go on without these ropes.

With the crowd watching, Zhou Zhong went down into the hole along the entrance of the hole, held the rope loose, and slid down.

"Mid of the week, slow down!" Professor Zhou was taken aback and hurriedly told him.

The cave is particularly dim, Zhou Zhong simply closed his eyes and observed the surroundings with his divine sense. When he descended to 200 meters, the majestic aura directly gushed up, and the richness seemed to fall into it. Normal in the sea! It's just that there is no water in the sea, and all is aura!

In the middle of the week, the true qi in the body rotates on its own, and it begins to quickly absorb these huge auras, and as the lower reaches in the middle of the week, the richer the aura in the air becomes.

"It seems that the current technological unmanned equipment cannot detect Reiki." Zhou Zhong said to himself.

After a short while, I finally reached the bottom in the middle of the week, and my feet landed. I felt that the goose soil here seemed to be relatively humid because the sky was not visible all year round.

In the middle of the week, he took out the bag given by Professor Zhou and filled some of the surrounding soil separately. Then, with a thought, he continued to explore the surroundings with his spiritual consciousness. In the middle of the week, I was surprised to find that, not far from his location, there was already a passage there, leading directly to the ground! And the passage seems very wide and there are steps!

Zhong Zhou picked up the hole punch on the side of the ground and saw that the power light was still on, which meant that there was still energy, so he turned on the switch and drilled in that direction.

Above the hole, Yan Tian suddenly saw the device showing that the hole was maneuverable, and hurriedly shouted: "Teacher, I am using a hole punch in midweek!"

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"Oh?" Professor Zhou was also a little surprised, not knowing what he was doing in midweek.

"In the middle of this week, there is really less success than failure. Even if you have a higher status, you can't mess around! What if you dig a cave?" Yan Tian said dissatisfied with Zhou Zhong.

Professor Zhou shook his head and said, "No, midweek is not a mess, let's wait."

More than 20 minutes later, the hole punch stopped, and more than 10 minutes later, I came up from the hole in the middle of the week!

Several people were taken aback, and the punching machine just stopped for ten minutes, so it means that it only took ten minutes to climb up from below in the middle of the week? This... what speed is this?

"In the middle of the week, what did you do with the hole punch?" Yan Tian immediately asked when he saw the middle of the week came up.

Zhou Zhong smiled and glanced at a few people and said: "I found a passage to the underground below, not far from where we dug, so we are continuing to dig it."

"What? Is there a channel below?" Professor Zhou and others were shocked when they heard the news.

Zhou Zhong nodded and said: "That's right, and there are steps in the passage, obviously artificial."

"Go, let's go down!" Although Professor Zhou is getting older, his momentum is really much stronger than those of young students.