Around the bottom of the boulder, dozens of such bamboo knots were densely inserted. Waiting for Mo Zhai to pick up the copper hammer, he smashed these bamboo tubes into the hole one by one...... Wu Weiyi found that the bottom of the boulder was beginning to show some signs of loosening.

At this time, Mo Zhai, who was standing behind the boulder, made a gesture to Wu Weiyi and shouted at him:

"Big brother! …… Stay away! …… I think this stone is almost unsupportable! ”

After hearing this, Wu Weiyi retreated to safety with the other stonemasons, only to see Mo Zhai continuing to hit the bamboo knots in the stone cave alone with a copper hammer......

When Mo Zhai knocked off the last piece of bamboo tube on the top of the boulder, he suddenly saw that the chassis of the boulder was loosened, and it collapsed directly in the direction of Wu Weiyi! …… If he hadn't seen it with his own eyes, Wu Weiyi wouldn't have dared to believe that this scene was happening in front of his eyes.

The boulder collapsed on the ground, and in an instant, a cloud of dust and smoke was raised, and Wu Weiyi and the people next to him subconsciously closed their eyes and covered their noses for a long time before slowly opening their eyes again. I saw that the boulder had broken into several pieces, large and small!

When the dust cleared, I saw Mo Zhai jumping down from the crack in the stone with a copper hammer in his hand, and walked through the pile of stones towards Wu Weiyi. When Mo Zhai approached, he pointed to the pile of stones, and said with a smile to Wu Weiyi, who was quite complacent:

"Big brother, what are Mo Zhai's methods?"

"Ahhh ...... Terrible! ...... It's really amazing...... If I hadn't seen it with my own eyes, how could I have believed it?! What's the mystery of these slub pipes, that they can be used to crush stone?! Incredible! ...... It's incredible! ”

Wu Weiyi looked at the pile of stones, and at the same time shook his head and said with emotion to Mo Zhai beside him. For Mo Zhai's strange skills, now he admires him so much!

"Actually...... These bamboo tubes are actually very commonplace, and they are just bamboos that grow on this slope. In fact...... The mystery is not in the bamboo, but in the ...... It's on the water! ”

Mo Zhai pointed to the buckets of clean water that the stonemasons brought from the mountain stream. And right next to those buckets, I saw that Mo Zhai was actually on this gentle slope, and he found several flat lands and set up a few cauldrons.

At first, Wu Weiyi only thought that these cooking utensils were all deliberately placed here by Mo Zhai to bury the pot to make rice in order to hurry up the work, but now that Mo Zhai said this, it is obvious that these cauldrons are not simple. I saw that under these pots, there were piles of bonfires boiling water there.

I just heard Mo Zhai say that the mystery is not in the bamboo pipes, but in the water? Wu Weiyi fell into deep thought. Thinking back to Fang Cai Mo Zhai's demonstration, suddenly, Wu Weiyi instantly understood!

"This ...... This Mo Zhai! ...... Is it just using the principle of heat expansion?! ”

Wu Weiyi then asked Mo Zhai for a bamboo pipe, and he deduced it by himself.

But I saw that he first compared the caliber of the bamboo pipe, and then according to the stonemasons just now, he first carved a small hole in a small stone. Then he compared the bamboo tube in his hand with the stone cave he had chiseled, and slightly adjusted the size and depth of the stone cave. until the bamboo tube can be fitted together seamlessly.

I saw that Wu Weiyi took boiling hot water from a pot and poured it directly into the stone cave until it was full. Subsequently, I took the bamboo pipe, which was also poured with hot water and then inserted into it, but it was a little stuck, and I only felt that it could still fall in and out seamlessly, but at this time, it could only be forced into a small section.

In fact, this is also very normal, because these stones will expand when they meet boiling water, and the original opening will be much smaller, and the bamboo pipe will also expand when it encounters hot water, and the diameter of the bamboo pipe is naturally larger than the original! As a result, the two things collide, and naturally they are much tighter than before.

Before this matter was finished, I saw Wu Weiyi follow Mo Zhai's example, take a copper hammer, and smash the bamboo pipe into the hole......

"Bang!"

Just like Fang Cai, after the bamboo tube and the copper hammer struck, there was a loud noise. Wu Weiyi looked at it again, and sure enough...... This small stone was split in half in an instant! ……

At this time, Wu Weiyi reacted. This small bamboo pipe is really a bit exquisite! Moreover, it is by no means as simple as thermal expansion.

It turned out that this Mo Zhai actually used this bamboo pipe as an expansion tube! This bamboo pipe will expand when it is damp and heated, and then it will be put into the previous hole, so that the hot water in the original hole can be sealed inside.

At this time, the strong external force is exerted from the outside, which is equivalent to transmitting the huge force of the hammer to the inner wall of the stone cave through the water pressure in the cave. And these stones, if they are to bear external forces, are extremely strong. But if it is expanded from the inside, it can't stand the pressure of this internal expansion at all! As a result, the stones are torn apart by internal expansion.

"Who would have thought that this Mo Zhai not only tried out such a method of 'water expansion stone opening', but also was able to adapt measures to local conditions and use local materials to use these most common bamboos in the mountains! …… That's amazing! ”

When Wu Weiyi thought of this, he couldn't help but be even more convinced by Mo Zhai's ingenious methods...... And Mo Zhai saw that Wu Weiyi had already mastered all the mysteries, so he said to Wu Weiyi on the side:

"Big brother! Can Zhai's method still work? ”

Wu Weiyi heard that Mo Zhai was showing off to him smugly, but he just smiled and nodded at him helplessly:

"Hmm...... Not bad...... That's good! ...... But Brother Xian, how did you come up with this method of water expansion and stone splitting? …… I'm also very curious about my brother! ”

I saw that this Mo Zhai was a rather slippery thief and laughed:

"Hey...... Big brother, do you still remember the 'fierce fire oil tanks' I made when I was in Picheng? ”

Wu Weiyi nodded, and replied:

"Naturally, I remember that at that time, we used the fierce fire oil tanks you made, and defeated Grandmaster Zhu Tian at the foot of Qingcheng Mountain, and even captured him alive for a time...... Ay...... I really regret that I let him go at that time! Blunder...... What a mistake! ...... However, when it comes to the fierce fire oil tank, what is the relationship with the current 'water expansion and cracking stone'? ”

I saw Mo Zhai smile again, and said to Wu Weiyi:

"Big brother, if you think about it carefully, don't you think that the fierce fire oil tank and this water expansion and cracking stone are exactly the same? One is to transport oil from gas, and the other is to use water to open stones, isn't it the same truth? …… When Mo Zhai first came, he was also like other stonemasons, in which he was a burning stone...... But when Mo Zhai set up a bonfire, it was a whimsical idea in his heart...... Therefore, in the past two days, Zhai is not doing his job, and he has been trying it with this method! Sure enough, the sky did not live up, but I finally figured out this solution! ”

Wu Weiyi listened to this Mo Zhai and talked again, although he knew that he was also selling it now, but it was up to him. Moreover, at this time, Wu Weiyi didn't dare to make fun of Mo Zhai, and he just thought secretly in his heart:

"Hey...... It is really worthy of being the originator of the Mo family who will go down in history in the future...... I, Wu Weiyi, can be with him...... I really don't know if it's his Mo Zhai's luck...... Or my Wu Weiyi's luck! …… If we can really travel back in the future, who will be able to believe it when it is said to others! …… Bizarre! It's really bizarre! ……”