In the U-shaped gap, there is a mountain stream that is very deep, the same level as the sea level outside, and it is a mountain crack that leads to the open sea, and the flash flood in this valley is leaking from here, but now it is the dry season, and the lake and the mountain stream have been cut off.

The management of this island environment is very simple, the two gaps are blocked, this valley is the bottom of a pot, the lake area in the middle will definitely expand, the water vapor in the valley will increase, and a humid and warm basin microclimate can be created.

As long as a large amount of soil is sent over, the valley will definitely become cloudy and mist, and flowers will bloom all year round, and the place where cultivators live must of course be like a fairyland.

Back at the edge of the cave, Zhang Yi pointed to a small canyon and said: "As long as we dig a small ditch reasonably, we can divert the water of the cave to flow around the hillside below, and this hillside will be made into terraces, which will be a flower garden or a medicine garden." ”

"Below the cave is the small waterholes dotted around, and then down is the terraced fields, leeward to the sun, not only the scenery is excellent, but a few hundred meters up is the ice and snow, just suitable for cultivating the cold air. ”

"Do you see that mountain bag in the valley? Dig a gap in the side, and the water level of the lake will only reach that gap, because the valley opposite is lower, and the water overflows through the gap, and the valley opposite will also become a small lake dotted around, and it will be trimmed a little, fill it with a few meters of soil, which is the prairie, and leave a river on the side, which leads from the lake to the mountain stream, and leads to the sea outside through the cracks. ”

The three of them went down from the valley and walked outside, surveying the terrain along the way, Zhang Yi thought about how to transform, as long as he said it, someone would deal with it.

Dani suddenly pointed to a mountain wall and said, "This place can also dig a cave, so let Aunt Wan and Sister Li live in." ”

"Not only them, but in the future, those who have more than five layers of condensation will live here, and they will dig a lot of caves, this is the headquarters of the Tianhe Dojo. You can also build a house on the surface of the lake, and live in a cave after building the foundation. ”

Tang Ru said with a smile: "In such a big valley, if you want to dig a cave, 10,000 people can live there, and we will all become primitive people in the future." Dani will farm in the future, and Mr. Zhang will go to the lake to fish. ”

Dani asked her, "What are you doing at home?"

Tang Ru smiled and said, "I cook, you can't cook, you can only go farming." ”

Zhang Yi said with a smile: "The more primitive the way of life, the less it will be destroyed, we live in this cave, which cannot be destroyed by missiles, there are terraced fields, grasslands and lakes, and we can be self-sufficient here." ”

Tang Ru suddenly asked Zhang Yi: "You designed the island like this, do you think there is going to be a war outside?" And it's a nuclear war. ”

Zhang Yi said: "There will definitely be a war, whether it is a nuclear war is uncertain, this island is far away from the battlefield, and there is no fear of any war." ”

Zhang Yi led them for a dash, went around to the front of the U-shaped mountain pass from the other side, and said to them: "There is a doorway under the high wall here, which is the entrance to our valley, and if you keep here, you can guard the valley." ”

Dani suddenly said, "What if the plane drops a bomb?"

Zhang Yi said with a smile: "I have five peaks of more than 1,000 meters here, and I can counter them by placing some empty weapons at will, how can he blow up such a large mountain? Unless he drops a nuclear bomb, which is specially aimed at us, it will really be a war of annihilation, and we will definitely not be the only ones who will die." ”

Tang Ru was not worried about the bombing, but asked: "How long will it take to build such a big valley, and how much soil will it take to transport?"

"This is the key, a wall with a V-shaped gap, it will take a year to build alone, and the U-shaped wall is even bigger, and we can't build it well for decades, so it will take several years to build the wall, and as for the soil to come in, it will take five to ten years to be able to live in, and if you want the mountains and rivers to be beautiful, it may take thirty years. I'm sure I'll keep filling in the soil here, and even the terraces on the hillside outside, all planted with big trees, even if it's a hundred years, I'm going to make this a sacred mountain. ”

Dani asked, "Why did it take so long? A building as big as Tianhe Island could be completed in two years." ”

Tang Ru immediately understood, and said to her: "This island is not far from the nuclear explosion test site, and ordinary employees cannot be allowed to come over. You have to dig the wall slowly with an iron pickaxe, and when you have carved out a two-bedroom house and planted a tree, you will become an old woman. ”

Dani immediately said: "Then what do I call the cave, I will dig a two-bedroom apartment for the rest of my life, I might as well drink tea in the Yujing villa." ”

Of course, Tang Ru was joking, but it also reflected a reality, that is, in the early stage of the construction here, it was impossible to command the students to work, and it was impossible to work here without a certain strength.

Zhang Yi spent a few days to completely map out the sketch, Bill and the three also took a complete summary, the six of them got on the Ruyi, and drove the Ruyi around the island slowly, Zhang Yi scanned through his senses, carefully surveying the trend of the mountain beams on the periphery of Wuzhi Mountain, as well as how to transport building materials into the island.

After bypassing the mountain beam of the port, Zhang Yi suddenly said: "The cracks in the mountain stream are really crossed, under this mountain beam, there are many cracks, and there is a crack that is very large, more than five meters wide at a depth of more than ten meters, Ruyi will definitely not be able to enter, dig it, and the small submarine should be able to enter the mountain stream." There are a lot of fish in the cracks, and the canal can dig a gentle slope so that the fish can go up the river into the lake, as long as some salmon are stocked, as long as they start to migrate, there is no shortage of fish to eat on the island. ”

When the Ruyi went around to the outside of the V-shaped rift at the air inlet, Zhang Yi jumped off the boat, climbed up from the outside, climbed to the bottom of the rift, and said to the two people who came up: "This slope is very steep, the ramp is straight, lay two rails down here, and use the elevator to transport the materials for blocking the wall up in a trolley." ”

Zhang Yi pointed to the current berthing point of the Ruyi and said to the two: "The current location of the Ruyi is very shallow, you can take advantage of the high tide to sink a barge here, turn it into an unloading platform, use the crane on it to send the materials pulled by the freighter to the shore, and then use the elevator to pull it up here, and slowly build it up, this wall is still easy to build." ”

Tang Ru looked at this rift and said to Zhang Yi: "If you go up such a high base, you are not afraid of collapsing." ”

Zhang Yi said with a smile: "We can make cement prefabrication, and the shape will be handed over to Fan Yugang for consideration, Tetris knows, and in this V-shape, you can use the method of Tetris to build a base." Anyway, it's a V-shape, the side that is oblique upward, you can share the gravity, the depth below is wide, the upper sides are wide and the depth is short, the components are connected to each other, they will not fall inside and out, they will only sink down, I will carve the runes, and they will get closer and closer in the future, and they are not afraid of earthquakes. This wall is an eagle's nest, if someone really wants to attack here, blow up this place and rush up, it is better to parachute in. ”

Zhang Yi already had a rough idea, so he went down and continued to circle around the island, and when he reached the sea outside the volcanic lake, Zhang Yi stopped the boat again and began to close his eyes and meditate on it.

Of course, he wasn't thinking about anything, but he used his divine sense to scan the periphery, and there was a Ruyi number to share the scope of his divine sense, and Zhang Yi was on the outside of this volcano, so he could carefully look for the overflow point, in order to see if he needed to modify the height of the spring inside.

The height is not wrong with Zhang Yi's estimate, that is, the height of the lake, the overflow crack is very large, no matter how much water will flow away, the lake level can only be lowered, it will not become higher.

Zhang Yi not only has to observe these, when going around the island, but also to see these gentle slopes on the island, which will slowly become terraced fields and plant trees, and another is to observe the rocks on the island, Zhang Yi is to engrave the runes in the mountains, it depends on these volcanoes, whether they are all bitter olive basalt, which is a common basalt of island volcanoes, commonly known as ocean rock, is a basalt rich in olivine and pyroxene.

Zhang Yi asked Hualien Liu Zhixiong to make a special cement, because of the addition of a lot of serpentine and rose stone, the serpentine component is peridot, and the rose stone component is rhodonite.

Zhang Yi had already tested it just now, and the mountain could indeed carve runes. The runes are engraved in the jade, but because the jade has good permeability, it is more beautiful to wear, and for true qi, it is enough to have permeability, and it does not need to be beautiful, which is also the reason why Zhang Yi can depict the runes on the cement prefabricated pile.

On the way back, he met the Slavic soldiers again, and in addition to the ones on the list, he also prepared a lot of good things, all of which were exchanged for wine by Zhang Yi. These weapons are reserved for the Ruyi Island Guard, and many night vision equipment are high-end goods only available to special forces, and it is difficult to buy them in the city of mercenaries, and the key is to exchange them for liquor from here, and the price is much cheaper.