Dragging the electric pickaxe of more than twenty catties in his hand, Lin Feng didn't feel heavy at all.

Kicking down the stone pile that had been sealed yesterday, Lin Feng walked towards the depths of the small cave.

Originally, Lin Feng wanted to come here in the middle of the night last night to open up Shandong and see what could release energy in this mountain. But in order to avoid startling the snake, Lin Feng still gave up this plan.

Although he listened to the conversation between the sixth master and Ah Niu last night, he learned that the leader of this mountain force was not yet a level 7 cultivator. But after all, he didn't know anything about the forces on this mountain, and although he was curious, he was not in a hurry at this time.

Unlike the other people who were caught on the mountain, the others were tired and tired, but Lin Feng was full of anticipation.

However, as early as last night, Lin Feng had already taken the Xuantie bayonet from the supermarket to his body in case of emergency. As for the crossbow of the moon god, he didn't take it out for the time being, although the short crossbow is relatively small, but because there is no end time watch, it can still be seen.

As for the end times, when you leave the human body, the power will automatically be cut off. Therefore, Lin Feng didn't need to worry about the messages sent to him by others being seen by them.

Digging a hole was a long and arduous job, but it was still quite easy for Lin Feng. You only need to add a little energy to the electric pickaxe in your hand, and the work efficiency of the electric pickaxe will be increased several times.

Although the efficiency of digging the hole has increased, the debris still needs to be disposed of. In order to prevent others from discovering that he was transporting gravel too often, Lin Feng had to put most of the gravel in a corner of the supermarket. Fortunately, the place was relatively large enough to put enough gravel. And there is no restriction on putting things in the supermarket and picking up things.

In the afternoon of yesterday, Lin Feng was able to dig the small hole to a depth of more than forty meters. Today, I gradually became familiar with the technique of digging holes. In just one morning, and with the digging yesterday, the estimated depth of the cave has reached a depth of 100 meters.

And Lin Feng and the others only took nearly a day yesterday, and according to the regulations of the mountain forces, they need to dig ten meters deep every day to complete the task. However, Lin Feng's speed was ten times that of ordinary people, which showed that cultivators were not only stronger than ordinary people in terms of combat effectiveness, but also much higher than ordinary people in terms of work efficiency.

It was already noon when I heard the bell for eating. Although Lin Feng felt that the energy fluctuations were gradually increasing, he still didn't dig through the mountain to see what was inside as he expected.

Fifteen or sixteen meters away from the cave he had dug was sealed with stones, Lin Feng walked out of the cave.

"Today your task has increased, and each of you must dig fifteen meters. You can only eat in the evening. ”

Standing outside the cave, the rat saw that the people who had come out of the cave were almost gathered, and said loudly.

It seems that after the conversation with Ah Niu last night, the sixth master was in a hurry. I want to speed up the digging speed, so I have increased the amount of tasks today.

Heard the words of the mouse. Lin Feng saw a resentful expression on the faces of the people around him. But at this moment, no one dared to say anything, and in the face of the rats with guns in their hands, these arrested people chose to forbear.

Although it is said that the work is tiring, it is better than losing your life. Besides, there is food here, and some people are often hungry outside, so it is not a good thing for them to be able to work here in exchange for some food.

But digging fifteen meters long, this is too much work. It used to take a whole day to dig 10 meters, but now it has increased to 15 meters, and I am afraid that it will work until late at night.

However, although this is already the limit for ordinary people, it is nothing for Lin Feng. Cultivator's powerful energy support. That's not a lot of work. Now Lin Feng was just thinking about how long it would take to dig through the mountain, so as to see what was inside that would emit that energy.

The energy that can penetrate the mountain is definitely not ordinary. If that energy could be absorbed by the human body like the previous round ball, Lin Feng estimated that it would bring a lot of benefits.

For lunch, it was still a small cake like yesterday with a wild vegetable soup as light as clear water, Lin Feng did not eat it, but entered the cave after receiving the food.

Although Lin Feng said that he could eat this kind of food, when he put the gravel produced by digging a hole in the supermarket in the morning, Lin Feng ate something in the supermarket. So he wasn't hungry now, and he went back to the cave to avoid some people finding out that he wasn't eating, and he had been working all morning. It's not normal to spend a lot of energy.

Next, Lin Feng did one thing repeatedly throughout the afternoon, that is, to shake down the gravel from the mountain with an electric pickaxe, and then transport it to the supermarket. Every hour. He would scrape together a truckload of gravel and transport it outside the cave.

In the middle of the night, the tunnel that Lin Feng had dug was nearly 200 meters deep, but it never penetrated the cave.

In this way, Lin Feng dug at a speed of about one hundred and fifty meters a day. For seven days, the depth of the cave was almost a thousand meters.

During these seven days, three of those caught died of exhaustion. But in the eyes of these people in the mountains, it is nothing. It was not uncommon for them to die a few people.

In the past seven days, more than a dozen people have been caught in the mountains and participated in the digging work.

Each person has a hole, which is according to their regulations, and Lin Feng, the hole he selected, is not very high because it is on the west side, so he is digging it diagonally downward.

It wasn't just a matter of the location of the mountain, but Lin Feng felt that the further down the energy fluctuation became, the stronger it became. In order to explore the source of this energy fluctuation, Lin Feng had been digging towards his senses.

Seven days have passed, and the depth of the hole dug by others is less than a hundred meters, but Lin Feng's hole is ten times deeper than theirs.

And every time Lin Feng finished digging the hole, he would cleverly block the hole in the right place in order to cope with the inspection of the day. For seven days, they were not discovered by the forces on the mountain.

On the eighth day, when Lin Feng got up early in the morning, walked into the cave and kicked away the gravel that had been sealed yesterday, and walked a thousand meters inside, preparing to continue digging downwards, something strange happened.

No matter how Lin Feng used the electric pickaxe, he couldn't shake a small pebble from the rock in front of him.

This was different from usual, with the blessing of Lin Feng's energy, hitting a stone from a rock was as simple as cutting tofu. Today was different, no matter how much Lin Feng tried to dig a hole from various angles, he couldn't break through at all.

Looking at the situation in front of him, Lin Feng frowned. (To be continued.) )