This ice wall is formed little by little over time, but anyone who sees the lifelike animals frozen in the ice will know how thick it is.

What's more, Shi Lei still used a harpoon, if it was a special ice-cutting tool, maybe he wouldn't be so tired, Shi Lei stretched out his hand, rubbing his sore arm weakly.

As for the harpoon, Shi Lei had inserted it into the gap casually, the handle was hanging in the air, just blocking between Mo Tingzhi and Shi Lei.

"Okay, replace me later."

Shi Lei rested for a while, his arms felt a lot more comfortable, he reached out to take the torch held by Mo Tingzhi, and then took two steps back to make room for Mo Tingzhi.

He has already figured out the outline of the channel, and for the rest, they just need to chisel out a channel bit by bit along the shape, and they will be done.

Thinking of this, Shi Lei couldn't help but look back at Mo Tingzhi, the mechanism diagonally opposite, the ice cubes were all transparent, at first glance, he really couldn't find it.

Mo Tingzhi noticed that something was wrong with Shi Lei's expression, he stretched out his hand to pull out the harpoon, and gripped it tightly, the tip of the harpoon was overused by Shi Lei, the point of the harpoon was already bent and curled, but this is not a problem.

"Watch carefully." Mo Tingzhi said lightly, and then pointed the tip of the harpoon obliquely at the ice wall, and the angle it presented with the ice wall was an acute angle.

Before the words were finished, Mo Tingzhi suddenly thrust the harpoon towards the ice wall, compared to Shi Lei's swiftness and bravery, let's look at Mo Tingzhi's movements.

It gave off a feeling of slowness, but one could tell from Mo Tingzhi's confident expression that he already had a plan in mind.

Shi Lei responded, and softly echoed: "Although this mechanism is destroyed, maybe it will find something useful." For example, even if there is a door in such thick ice, how to open it?

This question made Shi Lei puzzled, but his intuition told him that this point would definitely bring them very useful help. Obviously, Mo Tingzhi also thought of it.

In the quiet ice room, there was a muffled sound, and Mo Tingzhi's speed became more stable. He only used the ice to chisel within a certain range each time, and only changed places along the way until cracks appeared.

But after a while, there are already half of the cracks in the shape cut by Shi Lei, and it will be much easier to cut out one third of the cracks on the edges.

Shi Lei kept staring at it intently, and he didn't pay attention to the time, naturally he didn't know how long it had passed, and saw that Mo Tingzhi's movements gradually slowed down.

Shi Lei waited for a while, when he saw Mo Tingzhi retracting the harpoon, he quickly looked at the time and asked, "Tingzhi, are you tired?"

Mo Tingzhi paused, and the tip of the harpoon barely touched the ice. He was thinking of using the method of dividing to remove the ice bit by bit.

Hearing this, he lowered his head and stared at his arm for a few seconds, the hand holding the harpoon began to tremble, obviously, Mo Tingzhi was already tired.

He thought for a while, nodded slightly, and just opened his mouth to speak, when he heard a small but unusual sound, "咔嚓——" The sound kept repeating, as if the ice was cracking...

"Tingzhi, back up quickly and avoid!"

Mo Tingzhi followed the voice and was about to lower his head to look, when he heard Shi Lei's panicked voice, he subconsciously followed Shi Lei's words.

His movements were very fast, after hearing Shi Lei's words, he started to move, just when he stood still, Mo Tingzhi slightly raised his eyes, and saw a blur in front of his eyes.

Taking a closer look, there was a familiar shaped ice cube about five fingers thick in front of him, Mo Tingzhi raised his head in a daze, and his eyes met Shi Lei's.

"The ice in the tunnel has cracked by itself." Shi Lei's expression was indescribable, he was silent for a few seconds, and then he said quietly.

Although Shi Lei asked Mo Tingzhi a question just now, his attention was always on the ice wall. He was thinking about how to divide the ice layer and get it down little by little.

Unexpectedly, at this moment, he saw that the lower right corner that had not been excavated by Mo Tingzhi stretched all the way down along the unfinished crack in the shape of a spider web.

To be honest, this matter has something to do with Shi Lei. When he was digging the ice, he deliberately cut off the two or three finger-wide ice sticking to the ground.

If it wasn't for this, even if the ice cracked, nothing would happen... Shi Lei secretly regretted it, thinking, fortunately, Mo Tingzhi is fine.

Thinking about it, Shi Lei glanced at the ice cube in front of him with lingering fear, his eyes fell on the upward ice surface, and he froze immediately.

Wait, no!Why did this ice cube suddenly fall?They don't have the retractable tools, and they can cut ice cubes with corners, and they are so smooth.

"Shi Lei, look here."

Mo Tingzhi also noticed Shi Lei's abnormality, he followed Shi Lei's line of sight, looked down, and couldn't help being stunned for a moment, compared to Shi Lei's astonishment.

Mo Tingzhi seemed to have thought of something, he took a few steps towards the ice wall that was being excavated, and took advantage of the light of the torch in Shi Lei's hand.

He carefully observed the sunken ice wall, and poked the ice surface with the curled harpoon from time to time. After a while, he stood up straight again.

I don't know what he saw, Mo Tingzhi twitched the corner of his mouth, then turned his head and called Shi Lei. Although the voice was not loud, the ice room was very quiet.

For example, even if a needle is dropped, you can still hear it. This is not an exaggeration at all, so when Shi Lei heard someone calling his name, he immediately came to his senses.

He raised his head, unfortunately, his eyes met Mo Tingzhi's. Mo Tingzhi's eyes swept across the sunken ice surface, motioning for Shi Lei to look.

"What's wrong?" Seeing this, Shi Lei felt more and more strange, he took two steps forward, just facing the ice surface, Mo Tingzhi pointed at Shi Lei's left side with his harpoon.

Shi Lei took advantage of the situation and turned his head to look slightly. The torch moved closer, and the light shone on the ice surface, refracting a bit of dazzling light.

Unlike the dim yellow light of the torch, Shi Lei's eyes were not used to it, he squinted his eyes slightly, looked intently, looked carefully for a while, Shi Lei froze on the spot.

Seeing this, Mo Tingzhi knew that Shi Lei had discovered it, so he asked lightly, "Shi Lei, what do you think?"

Shi Lei was choked, he turned his head speechlessly, glanced at Mo Tingzhi, then gritted his teeth and said: "Cold salad!"

Could he not be angry, the two of them put in so much effort just now, and managed to make a dent about ten inches deep.

In the end, the truth suddenly told you that he deliberately chiseled off five inches just now, it was just unnecessary, it would be strange if he wasn't angry, thinking of this, Shi Lei couldn't help but snorted.

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