Chapter 1308: Holes in the Underwater World

"Master Li, the cave entrance is big, the water is warm, not cold at all." A voice came from the other side.

"Not cold? Your hands are frozen outside, and you feel hot when you touch the cold water. Come on, wear a diving suit with me."

Li Yi didn't feel warm, so he chose a warm diving suit.

If the temperature under the ice is really too high, there can't be an ice layer on it, and it will melt.

But there can be an ice layer around, like a hot spring in the snow.

Li Yi got into the car and took out five sets of diving equipment again and again.

The diving suit can prevent shark bites, but Li Yi is still worried and afraid of death. What if the electric gun encounters a big fish and hits himself?

Guo Ziyi put on one set, and the other three sets were given to the three Yulin flying cavalrymen with the best swimming ability in the team.

The five people were ready, and a rope went down first, so that it would be convenient to pull when they came back.

At the same time, there was a light that could glow underwater, otherwise they would not be able to find the way back after going out.

Five people stood beside the cave, and someone lifted a big carp that had emerged from the cave by the gills and gasped.

The big carp looked to be more than 30 kilograms. It probably found that it was brighter here than elsewhere, so it came to get some fresh air.

"Jili, the chefs are making fish sashimi. Let's go down." Li Yi took a look at the big fish and didn't plan to release it.

He went down first, turned on the light, observed the surrounding situation, and swam a distance.

Guo Ziyi was the second one, so he made way.

He carried an extra underwater light, and the five people went down to explore the bottom.

Li Yi looked at the depth gauge and slowly went down.

Thirty-five meters, the bottom.

He made a gesture to ask the four people about their status, and the four people responded with a group of gestures, indicating that there was no problem and they were not nervous.

He made another gesture to disperse and must come back in thirty minutes.

Guo Ziyi put down the light, and the five people dispersed with diving lights, each looking for a position.

Every ten meters underwater is one atmosphere of pressure, which requires a relatively high physical condition of people, and inhaling nitrogen is not comfortable.

If you only go down to this position and stay for more than ten seconds, you don't need to wear an oxygen tank, and the Yulin Flying Cavalry can do it.

A good free diver can actively exhale air when reaching the pressurized depth and complete the decompression operation during the rapid ascent stage.

Anyway, Li Yi can't do it, but he thinks Guo Ziyi can learn it.

Li Yi swam and observed the surrounding situation, and confirmed that it was an underground lake. The thermometer showed eight degrees above zero, a hot spring type.

As for why he didn't find it at that time, it was probably destroyed by geological changes.

But there is a hot spring, and the water temperature is not low. The current place will belong to Lingbao City, a county-level city in the future.

The current eight degrees is obviously not suitable for hot springs, not even in summer.

It is necessary to take water samples for testing to see the composition of the water.

It is high in minerals and harmless to the human body. It can be drunk and even higher for watering the land.

The royal family has a hot spring water planting area and uses hot spring water to irrigate the land. The cucumbers grown are tastier than those grown in greenhouses.

"Black fish, according to them, there should be a big black fish over two meters long. How many years has it grown?"

Li Yi muttered, he wanted to find a big carnivorous fish and kill it.

The surface of the water will be safe, and people can play with peace of mind. It is unrealistic to raise fish.

If you raise fish, they will all go into the underground lake.

The underground lake is also connected to the underground waterway, and God knows where they will go.

But you can make a little hole, and then cast a net to catch fish.

There should be a lot of fish in the underground lake and underground waterway, and they will breed naturally.

If it weren't for the black carp, it is estimated that there would be a lot of other fish.

It is believed that fishing will replace the position of the black carp and help the number of fish in the underground lake to maintain a balance.

Li Yi was thinking about how to make better use of this hot spring while swimming. It would be convenient if he could find the outlet.

Put a big net at the outlet to prevent the fish from going out, so that they stay in the underground lake, and you can throw things down to feed the fish.

Try to catch the carnivorous fish as much as possible. When the other fish grow up, they will go up to live and fish in summer.

Use a large-hole net when fishing to leave other small fish.

In winter, the water is eight degrees Celsius. Insulate the water pipe and lead it to the surrounding vegetable greenhouses.

It is also OK to lead to the trough for livestock. Both poultry and livestock need mineral supplements.

"Find a place to dig a pressure well, and the people can press water to drink. It is best to have weak alkaline water. Let's take a look at the test data."

Li Yi muttered again. He thought of many ways to use underground low-temperature hot springs to help local development.

He came here in person to develop the local economy and take Li Longji and others to play.

He also wanted to take a stroll. It was annoying to stay in Lijiazhuang all day.

Li Yi, who was looking for black fish to electrocute the other party, continued to swim. The underwater visible distance was not far.

As he swam, he found a "wall" in front of him, with large and small holes on the wall.

It seemed to be naturally formed, not artificially chiseled.

He swam along the wall. The large one had a diameter of about one meter, and he could swim in easily.

The small one could not see whether the small hole was water-permeable or not, and he did not dare to go in, no one dared to go in.

"Is it natural weathering? Water erosion? It was weathered on the surface and then sank?"

Li Yi was analyzing the reasons for the formation of these holes. He didn't plan to explore where the holes were connected today.

After swimming for more than 20 minutes, Li Yi started to "run" back in a straight line. It was almost done. He didn't regret not encountering a big black fish.

He planned to stay here for a few days. Anyway, he would return to Chang'an before the New Year.

When he returned to the gathering point where the lights were shining, the other three people also came back.

There were still three minutes left before half an hour, and the three Yulin flying cavalrymen did not want to take risks.

This was not a war, so they had to fight desperately. After swimming around and understanding the situation, they had to act according to orders. Personal heroism was not allowed here.

Li Yi looked at the watch, and the time was approaching half an hour, and Guo Ziyi had not returned to the team.

Li Yi gestured to the three people, signaling them not to worry.

Once you are anxious, the oxygen consumption will increase. If it really doesn't work, everyone should go up first and replace the oxygen and nitrogen cylinders.

Once or twice, the impact on physical health is very small.

Half an hour later, Li Yi gestured again, the last five minutes.

The three people also looked at the watch, feeling that the time passed so quickly, as if the second hand was brushing away.

They hoped to go slower, slower, and wait for Guo Ziyi to come back. UU Reading wｗw.uukanshu.net

Now they are not allowed to go to Guo Ziyi, discipline.

Li Yi looked calm, he had confidence in Guo Ziyi, the existence of the martial arts examination, would there be any problems below?

It's four and a half minutes, and it's almost five minutes. Everyone has to go up.

A light spot appeared in the water, and the three Yu Lin flying cavalrymen smiled, but no one else could see it.

Sure enough, the light spot gradually grew larger and began to dazzle the eyes.

Guo Ziyi came back, and with him came a big fish that was longer than his body.

The three Yu Lin flying cavalrymen went up, and Li Yi picked up the lamp on the ground, shook it, and swam up first.

He stopped at a depth of 20 meters, and Guo Ziyi and the other four also stopped with the big fish.

About two minutes later, they went up again and stopped at a depth of 10 meters.

One minute later, Li Yi went up first, holding the rope, and called people: "Hurry up, prepare the big net, no, tie the thick rope with the stick."