Thinking about these things in his heart, the movements in Lin Cheng's hands unconsciously began to speed up, and even in order to increase the speed of excavation, he also took the time to exchange another long sword to come out, and under the combined force of the two swords, he dug out a passage nearly a hundred meters deep and inclined upwards in just an hour's effort!

"Hoo ......"

After digging continuously for a whole hour, even if his physical strength was as strong as Lin Cheng, he was a little overwhelmed, and after touching the sweat on his forehead, he decided to sit down and rest for a while.

In the process of resting, Lin Cheng's brain did not stop running, he remembered that it took nearly half an hour to go down in the cave before, and according to the calculation of descending a hundred meters in three minutes, it was at least more than a thousand meters away from the ground to the underground!

Although he had climbed some distance in the subsequent escape, after the fall just now, he estimated that the distance he had climbed had already fallen short, and at this time he had either already returned to the original point, or he had fallen deeper into a deeper position!

"1,000 meters...... I can dig about 100 meters in an hour, so even if I keep digging, it will take at least ten hours to dig out?! ”

After calculating the approximate time it would take to escape from here, Lin Cheng was speechless for a moment, this was the worst situation he had tried to avoid since he came in, but he didn't expect to meet it in the end......

sighed deeply, although it was difficult to accept, but Lin Cheng could only accept his fate, after all, he took the initiative to jump in, and he had to accept the final result, whether it was good or bad.

Knowing that it would take ten hours of continuous excavation to get out of here, Lin Cheng didn't dare to rub it any longer, and quickly stood up and continued to swing the long sword in his hand, and for a while, the familiar slashing sound sounded again in the narrow passage.

Coke originally wanted to help, and its claws that changed into a special form were very hard and sharp, but considering that maintaining a special form required a huge amount of physical strength, Lin Cheng finally gave up this option and decided to use Coke as a life-saving hole card, and never use it easily until the last resort.

"Click...... Click...... Boom! ”

Stuffy head slashed on the rock wall in front of him, repeating these monotonous mechanical movements, Lin Cheng's face was already full of numbness, just when he raised the long sword in his right hand and slashed down again, the sound that came back was no longer the previous 'click' sound, but the echo of a stone falling to the ground!

Hearing this echo, Lin Cheng, who was tired and helpless, was stunned for a moment, and hurriedly looked forward, only to see that the place in front of him that was cut off by his long sword was actually revealing a hole more than ten centimeters wide at this time!

Seeing this hole, Lin Cheng suddenly all his fatigue disappeared, and he hurriedly waved the long sword in his hand to widen the hole to a large opening that could accommodate one person to pass through, and then jumped in with Coke!

As soon as he jumped into the cave, Lin Cheng felt a breeze blowing across his cheeks, and his spirit suddenly lifted again, and the decline just now suddenly disappeared!

Because, since there is air flow through this cave, it means that there must be another exit in this cave, although it is not known where the exit is located for the time being, but it is exciting enough!

Stretching out his index finger and dipping it in some saliva, Lin Cheng raised his index finger above his head, closed his eyes and quietly felt the position where the breeze was blowing, and after a few seconds, he suddenly opened his eyes, and at the same time, a smile appeared on his face!

"It's really an endless road, let's go, buddy, we finally don't have to burrow for more than ten hours like a gopher!"

After determining the direction where the breeze was blowing, Lin Cheng directly took out his flashlight, glanced around, and saw that the place where the wind was blowing on the left was a narrow gap in gravel, and directly raised the long sword in his hand and slashed again!

After chopping and kicking away the gravel blocking the road, what appeared in front of Lin Cheng was a low passage barely enough for one person to pass through, seeing this passage, Lin Cheng did not hesitate, and directly bent down and quickly drilled in.

After walking in this dark and cramped gravel passage for more than ten minutes, Lin Cheng suddenly felt empty above his head, and found that he had unconsciously come to a wide hole in the ground!

Countless mutilated corpses of the Eaters were scattered on the ground, and the stench of the air filled the entire cavern, and rubble of various sizes was scattered everywhere, making it clear that this was a cavern affected by the explosion of the C-rocket.

Feeling that the smell was too bad, Lin Cheng made sure that there were no living gnawers around, and directly took Coke over the stump corpse on the ground, and quickly walked towards the opposite hole, the explosion just now was too violent, even if the number of nibbles in this cave was extremely large, after the explosion and collapse just now, it is estimated that he would not survive much, and the tragic situation of this cave is only one of them, which is not surprising.

Walking into the narrow passage again, Lin Cheng suddenly felt that the oncoming wind seemed to be stronger, which made him more and more excited, the stronger wind showed that he was not going in the wrong direction, and it also showed that the unknown exit ahead should be very wide, at least much wider than the passage he was walking now!

Methodically moving forward, Lin Cheng was about to take the time to check how much energy he had earned this time, but before he could call out the system menu, he suddenly heard a sound of water droplets coming from not far ahead!

Hearing the sound of water droplets, Lin Cheng didn't feel excited this time, but suddenly frowned!

Because he suddenly remembered that he had just gone down to the cave in the ground before when he felt the presence of the wind, and with the wind, there was also this familiar sound of water droplets!

But the problem was that he was very sure that both the wind and the sound of water droplets came from the huge cavern that was dormant with countless predators deep underground, which made him wary at this time, and secretly thought to himself, could it be that he had accidentally returned to the far point?!

Feeling that something was not right, Lin Cheng hurriedly slowed down his steps, and at the same time signaled Coke to pause, and slowly moved forward with the sound of his footsteps, and after a while, as the sound of water droplets became clearer and clearer, he finally walked out of the passage again and entered a cave where the rock mass collapsed extremely seriously!

After walking into this cave, Lin Cheng finally locked the location where the sound of water droplets came from, and it was not in this cave, but behind the pile of rubble more than ten meters high on the right hand!

The piles of rocks were bigger than the other, and they were easily isolated into a single cave, which was the one where Lin Cheng was now.

But the problem is that not only the sound of water droplets came from next door, but even the breeze that guided Lin Cheng to this place actually came out of the cracks of these rocks, and after these leaking breezes swirled and converged in this narrow cave, a new whirlwind was formed and blew outside!