At this moment, a small-scale collapse occurred inside the stone box, and new rocks reassembled to form a balance that supported the cave entrance.

Because the opening inside is relatively narrow, the speed of balancing and stabilizing is also much faster.

However, the mudslides outside, which had no support, did not stop so quickly. Even a slight tremor affected the already unstable mudslides above the stone box, causing them to accumulate potential energy again and begin to slide downwards in large quantities.

I lay on the rock wall, listening carefully to the sounds outside. At first, the sounds were very muffled.

As time passed, the dull sound turned into a clearer rumbling sound.

The dull sound indicates that the mudslide layer is too thick, making it difficult for sound to travel. However, no matter how large the mudslide is, its volume is ultimately limited. As a large amount of mudslides and landslides occur, the thickness of the mud layer also decreases rapidly.

This is also why it gradually turned into a clear rumbling sound.

Hearing this noise, I was overjoyed. Although I didn't know how thick the mud and rocks outside were, judging from the noise, it shouldn't be more than a meter thick.

I know that the mudslide layer is much thinner than before, but after the mudslide layer loses a lot of mass, the intensity of the landslide will also be reduced a lot.

Moreover, the further we went, the less it changed, and Top and I were still in a precarious situation.

However, there is no better way to do this at the moment, so we can only speed up the cleanup.

Top and I cleared the collapsed pile of soil to the corner, and then we continued to dig out the newly protruding rocks.

This time, we scooped out almost all the large rocks we could touch inside. Without any support, the mud and rocks, under pressure, bulged into the stone casket once again.

I could clearly feel the mud and rocks bulging inwards in my hand, and I shouted to Top beside me,

"Top, get out of the way!"

No sooner had I finished speaking than a large amount of mud and rocks poured in from the cave entrance with a "whoosh." Top had already jumped in front of me; the noise had startled it, causing it to squeak twice.

The amount of mud and rocks poured in this time was clearly more than one or two times that of the previous ones, and the entrance to the cave was blocked, forming a steep slope of mud and rocks that sloped inward.

By this time, most of the mudslide outside had receded, and there happened to be a gentle slope about eight or nine meters wide near the stone box where Tang Yi and the others were.

The mud and rocks that fell from above filled the gentle slope, forming a right-angled triangular mud and rock layer with the earthen embankment several meters above.

This batch of mudslides was one of the last to remain here because of the gentle slope below. Tang Yi and his group had seen many similar terrains when they came down.

The place where Tang Yi and Top are now is unfortunately located at the right angle base of this right triangle.

Although a lot of mud and rocks came in this time, as the triangle continued to shrink downwards, the speed at which the mud and rocks slid down became surprisingly slow.

However, there was one piece of good news. Although the horizontal layer of mud and rock at the cave entrance was still very thick, the apex of the triangle was already very close to the cave ceiling where they were.

"Damn it! It's been so long, why hasn't it opened yet!"

We hadn't rested since we were running like crazy, and now I was exhausted and covered in sweat, and my mood was at its lowest point.

I can feel that the temperature inside the cave has risen a few degrees compared to before, and it's starting to get a bit hot.

Not only did my body feel a bit hot, but Top and I also started breathing more rapidly.

All of this indicates that the carbon dioxide concentration in the cave is accumulating rapidly, and it won't be long before we are very likely to die from carbon dioxide poisoning and lack of oxygen.

At this moment, I also realized that continuing like this was definitely not going to work. The amount of mud and rocks falling was increasing, but the commotion outside was almost imperceptible.

When I came in, I briefly surveyed the terrain around this stone box. I also knew about the gentle slope in front of it. Now we are trapped at the base of this dangerous place, where the thick mud and rocks are very difficult to open.

Our stone casket is now filled with mud and rocks. If we can't find a way to let the air in first, we'll probably be doomed.

At this moment, I am naturally very unwilling. We've weathered many storms, so what are a few difficulties now?

I considered that the closest point of the triangle to the stone box should be at the top of the cave entrance, which should also be where the mudstone layer is thinnest.

I told Top to stop digging. Continuing to dig now would only waste precious space by bringing in more mud and rocks; there was little point in doing so.

I gripped my spear and began to pry down all the rocks blocking the top of the cave.

As some mud and rocks fell, the triangular slope outside slid a little more, and this time the amount of mud and rocks falling in was much less than before.

It seems my guess was right; the mud layer above is very close to the top of my cave.

I quickened my pace, repeatedly stabbing the mud and rocks with my spear in one direction at the top. Soon, the mud and rocks outside, under the series of vibrations and disturbances, finally gave way.

Just when I was almost in despair and my lungs were about to burst from lack of oxygen, I plunged one last time into the layer of mud and rocks above.

Suddenly, the solid feeling of being firmly embedded in the mud and rocks disappeared, replaced by a hollow feeling of being embedded in the air. Not only the spearhead, but the entire spear shaft had already penetrated more than halfway.

At that moment, I felt like I had won billions in the lottery; I laughed wildly.

"It's through! It's through! I finally got it through, hahaha..."

For a moment, profanities and laughter mingled, tears and sweat mingled, and my tense nerves mingled with the fresh air outside.

I quickly poked the spearhead into the soil above, making the leaking hole even bigger.

Soon, a small gust of wind could be felt blowing into the stuffy stone box through the hole above.

"Top, come quick! There's a breeze coming in!" I shouted excitedly to Top.

Top, who was already feeling dizzy from lack of oxygen, heard my call and quickly ran to the opening in the tunnel, breathing in the hard-won fresh air.

I never imagined that one day, even the most ordinary air would become so precious.

Top and I had been holding back for a long time, and now that we were breathing fresh air again, the drowsy heaviness in our brains was replaced by a refreshing coolness, and we instantly became much more awake.

We hadn't had a chance to rest because we were trying to save our lives. Now that the air is circulating again, we can finally sit down and recover our strength.