Curiosity is curiosity, Tianyun Mountain is really difficult to climb.

The mountains here are different from those on Gangnamji, with little vegetation and mainly soil and rock.

The mountain is steep, there is no thing growing on the mountain, the products are not abundant, and naturally few people go up the mountain.

No one went up the mountain, and naturally there was no way.

"I didn't think it was strange before, but now it's really strange, who would build a house on such a mountain? It's not easy to climb the mountain by yourself, right?" After climbing for a long time, Tian Jifeng wiped his sweat and said breathlessly.

"Don't talk about going up the mountain, how can it be so easy to build a house? you have to have tools, you have to have materials, so many things, how to get up the mountain, how to build a house?" Fang Jueming's situation was slightly better than him, but he was also panting, shaking his head and said.

"yes...... How do you know that there is such a stone wall dwelling on this mountain?" Jiang Wangfeng asked Xu Xihuai curiously.

"I heard about it when I was very young, and I can't remember who said it. Xu Xihuai shook his head, "Later, Shibiju became famous because a great painter named Wu Keming passed by here and painted a painting of "Tianyun Shiju". ”

"Ah! Tianyun Stone Residence! I know this painting!" Jiang Wangfeng shouted, "My mother has seen it with her own eyes, and said that there is a strange relationship between the mountains, and the evaluation is very high, it turns out that this is the painting!"

Wu Keming?

Xu Wen has heard this name too.

It was when it was still in the old wooden yard, and even the restored old painting hanging on the azure wall was also a landscape painting, and the inscription was the words "Unknown Layman".

Later, Lian Tianqing casually introduced that the nameless layman's real name was Wu Keming, who painted as a teenager, and only became famous after middle age, and Yicheng was a big name.

Before he became famous, he painted a lot of old paintings, and no one knew him everywhere. After becoming famous, many people look back to look for it, and when they meet one, they regard it as a treasure, and they can also sell it for a high price.

For the same painting, the front and back have never changed, but the identity of the author has changed a little, and the price is completely different.

Lian Tianqing's words were sarcastic when he said this, which was his usual attitude, and Xu Wen was particularly impressed by this.

However, there will be such big changes before and after, and it can also be seen how famous Wu Keming was later. According to the calculation of time, Tianyun Stone Residence was drawn after he became famous, and it is not surprising that Tianyun Mountain Stone Wall Residence became famous because of this.

Maybe this mission came from this painting......

They had only discussed a few words, and soon they had no strength to say anything more.

There is no road to the mountain, and it is too tiring to climb up.

Some places can still be walked, while others can only be climbed by nailing to the stones with an iron pickaxe.

Fortunately, the above still paid attention to them, and the guide they found was the best, and he even climbed Tianyun Mountain, and he could find the way in many places where there was no road, and barely moved forward.

It's really too tired and difficult, Xu Wen also rarely feels too hard, but he can't be distracted casually, the mountain is too dangerous, and if he is not careful, he will lose his footing and have an accident.

During the break, everyone was so tired that they couldn't speak, and Xu Wen was the same.

He didn't feel cold now, his body burned like fire, and so did his throat.

He pulled out the water bladder to drink, and the sweat dripped on the ground, splashing some of the floating dirt, revealing the stone patterns underneath.

Xu Wen lowered his head, gasped, and took two more sips of water, and finally calmed down.

He glanced at the ground, looked away, then looked again, crouched down and touched the ground.

"What?" Xu San noticed his movements.

"This stone is good, the texture is very fine. Xu Wen struck the stone twice with the pickaxe in his hand, and then slashed hard a few times.

He used a lot of strength, and some white marks were knocked out of the stone surface, but there was no trace of breakage.

"yes, it's not the same as the ones we just encountered. Jiang Wangfeng came over and said.

When they walked to some roadless places just now, they needed to hit the stone surface with iron pickaxes to support their progress.

This kind of stone is also particular, it can't be too soft - otherwise it will crack when you nail it, but it is dangerous, and it can't be too hard - the nail can't be nailed in, how can you go up the mountain?

The place chosen by the guide is very good, and the stone is neither hard nor soft, which saves them a lot of effort.

But it's also clear that the stones in those places are completely different from those here.

If it's all so hard, how can they go up the mountain?

For craftsmen, stones with different hardness and softness have different functions, but in general, hard and dense stones are of course preferred.

Hard stone is more stable and durable than soft stone, and in this respect, stone is the same as wood.

Xu Wen knows more and sees more.

Generally speaking, natural stone can be divided into three types. Igneous rocks, sedimentary rocks, and metamorphic rocks.

Igneous rocks are formed by the melting of rocks or the consolidation of magma after cooling, the most typical representative is granite, sedimentary rocks are formed by the deposition of weathering products and volcanic eruptions of other rocks, and metamorphic rocks are formed by the transformation of one stone into another stone under high temperature and high pressure conditions, one of the typical representatives is marble.

As far as he could tell, the underground was granite.

Granite is the hardest of the common stones, with dense structure, high compressive strength, low water absorption, high surface hardness, good stability and strong durability.

It is a kind of igneous rock, which is controlled by geological influence and crustal structure, and is often produced in the form of rock foundation, rock strain, rock block, etc., with a relatively large scale, wide distribution and regularity.

In other words, if there is a piece of granite here, there is probably a lot of granite around!

The distribution and reserves of granite and marble in China are not small, but relatively speaking, they are not widely used, mainly because the construction is mainly made of wood and the soil and stone are relatively small.

In particular, stone is not completely unused, but most of them are used in tombs, stone pillars, stone monuments, stone carvings, etc., and large-scale arch-style stone buildings like those in the West are very rare.

Speaking of which, after coming to this world for so long, in addition to the caves dominated by earthen structures, the only relevant drawings Xu Wen has seen are the Beamless Palace, and the only example is the hall in Green Forest Town.

Regarding the reasons why there are fewer stones and more trees in ancient buildings, Xu Wen has seen a lot, but there is still no complete conclusion.

"Fortunately, it wasn't this just now, otherwise it would be really hard to go up the mountain. Tian Jifeng was happy.

"These stones can also be used to build houses, right?" Xu Xihuai asked suddenly.

"Of course you can, but this kind of mountain, how to quarry stones, and how to transport it?" Fang Jueming shook his head calmly.

This point he pointed out is very realistic, and it is one of the reasons why Xu Wen knows that stone is difficult to use on a large scale in construction.

"Yes. Xu Xihuai sighed, and the group of people rested for a while before continuing to move.

Tianyun Mountain itself is very high, but Shibi Mountain is not on the top of the mountain, but on the halfway up the mountain.

They rested all night in a sheltered place on the mountain, and at about noon the next day, they finally saw the shadow of the stone wall dwelling in the distance.

In an instant, everyone, including Xu Wen, gasped together.

If you don't see it with your own eyes, if you don't come here in person, it's really hard to imagine how such a house can be built in such a place!

Yes......

A!