After Wei Minsheng returned to the other world, he saw that the temperature had gradually warmed, and in order to ensure the safety of his base, he felt that he should establish his own primary defense system, so that he could have his own foothold in a world facing war and plunder at this moment. If you don't have any means of defense and self-preservation, no matter how well your base is built, it will only be a wedding dress for others.

From the map, Wei Minsheng already knew that there was only one exit from the plain on this mountain, and there was a high probability that this exit was washed out by the mountain lake breach. Topographically, a breach was created at the time of the breach, but there was a smaller valley outside, about 100 meters wide at its widest point, forming a dammed lake. When the lake filled the valley, the rising water level broke out a gap, so that the mouth of the plain resembled a gourd. From outside the mountain into the "gourd mouth" to the plain, there are two relatively narrow valley mouths, the "gourd mouth" is the narrowest, only more than 20 meters wide, more than 50 meters long; The second valley mouth is like the thin waist of a gourd, slightly wider than the "gourd mouth", about 40 meters long, only more than 20 meters long. The terrain on both sides of the valley is very steep due to years of rain, and the vertical height is more than 20 meters. Outside the Hulukou is a gentle slope that looks like an alluvial plain and extends in a fan-shaped shape to the edge of Lotte Creek. It may be that there is too much rock and mud washed out, and it directly pushes the channel of Lotte Creek into a large bend in the opposite direction. And just upstream of this big bend, that is, Wei Minsheng saw the location of the Lotte Creek Reservoir in his world, Lotte Creek originally flowed directly to the mountain where his base was located, but when it flowed to the foot of the mountain, it encountered solid rocks, due to the accumulation of mud and rocks washed down, Lotte Creek was forced to turn another big bend, and a short section of the river under the mountain was squeezed out of six consecutive bends, and then flowed to the Yangtze River.

From the perspective of topography, their own plains are relatively easy to defend, as long as you build walls or other fortifications in the two places of "Hulukou" and "Hulu Waist", and then collect enough pebbles from the river, take advantage of the condescending advantage, even if you encounter a small army of several hundred people, you can easily deal with it. If you sort out a flat ground outside the "gourd mouth" and then load your dump truck with steel plates, who can withstand the impact of machinery weighing several tons in this era of cold weapons. If there are fewer people, they can't attack, and if there are more people, they use a dump truck to run a few laps, and this tireless "steel monster" is enough to withstand thousands of people. If you prepare a few more such armored dump trucks, as long as your own fuel is enough, with the strength of this world, there is basically no possibility of rushing into the plains in this kind of terrain.

After thinking about their own materials, river sand and pebbles can be obtained from the river, and the cement already has a part of the inventory, which can be supported for a period of time, and only the steel bars have to wait for about ten days. While waiting for the rebar, you can organize the villagers to dig the foundation and prepare the river sand and pebbles.

After planning these, Wei Minsheng asked Steward Wang to gather the villagers, leaving 1 villager to take care of cattle and sheep, 2 people to take care of vegetables in the greenhouse, 1 person to make bean sprouts, 2 people to take care of Wang Xiaoqi's mother and son who took care of the shop, 1 person to take care of the chicken farm, 3 women with children under the age of 6 who need to take care of them, 4 cooks to cook for everyone, and 6 people including Wang Xiaobao in study, and the remaining 36 people all brought tools, boarded the dump truck, and drove out of the valley. It is useful to break the rock when digging the foundation, so I put an electric pickaxe on the car as well.

When it comes to the position of "gourd waist", the terrain is a bit steep, and the dump truck cannot drive down directly. Seeing that the location of the "gourd mouth" was only two or three hundred meters away, he stopped the dump truck and let everyone bring the tools to the "gourd mouth". Looking at the narrow valley more than fifty meters long, Wei Minsheng hesitated for a while, and chose three places to build fortifications, one was at the outer mouth of the valley, one was at the mouth of the inner valley of the valley, and one was in the middle of the valley.

If you build a fortification at the mouth of the outer valley, the fortification will face a relatively large area, which is vulnerable to attacks from multiple long-range weapons, and its own supply line will be longer. The advantage is that it has a wide line of sight, and on the premise of having superior strength and thermal weapons, it can incorporate all the plains from the mouth of the valley to the river into its control area, so that you can continuously obtain river sand and pebbles. Small pebbles can be used for concrete, and large pebbles can be used for trebuchets.

If you build fortifications at the mouth of the inner valley, the place facing the fortifications is relatively narrow, which can play the effect of "one man is the pass, and ten thousand people are not open", no matter how many enemies there are, there is no way to rush up, and the supply is also very convenient, and the defensive pressure is small. The disadvantage is that it is not possible to completely control the plain from Lotte Creek to Taniguchi, which is not conducive to future development.

If you build fortifications in the middle of the valley, it is like a compromise of the first two ways, the advantages are not obvious, and the disadvantages are not obvious. But this plan has an advantage: if you have the support of long-range weapons, it is easy to extend from the top of the valley, relying on the mountain beams, you can also control the plains at the mouth of the valley, and the mountain beams on both sides can also attack the enemy who enters the valley, which is a construction plan that can be attacked and defended.

After much hesitation, Wei Minsheng still chose the plan of building fortifications in the middle of the valley. The valley cliff is more than 20 meters high, and it is more than 20 meters wide, and the amount of construction work is still very large, if all are poured with concrete, the foundation is not solid is not good.

After thinking about the construction plan, Wei Minsheng asked the housekeeper to instruct the villagers to dig up all the soft soil at the bottom of the valley in their designated place, all the way to the hard rock. Since the stream in the plain flowed out of this valley, in order to prevent the excavated foundation from being flooded, a small pond was dug at the top of it, and several large sewer pipes were buried in the pond, and the water was led directly out of the valley by sewer pipes. After the villagers fully entered the work, Wei Minsheng thought that there was still one driver left, and it was impossible to be a driver all the time, so he should train a few drivers, anyway, there are no traffic rules here, so there is no need to learn the theoretical things of "Taoism", just learn to drive. On the side of careful observation, I chose two villagers who were more receptive, organized, flexible in their hands and feet, and about 20 years old, anyway, the plain was open, as long as they could move forward and backward. Wei Minsheng took two "prospective drivers" and taught them how to put gears, how to start, and how to shift gears. Due to the use of synchronizers between the current gears, unlike the old liberation car to shift gears in strict accordance with the "two-foot throttle" operation specification, as long as you simply tell the shift to follow the operation sequence of loosening the throttle, stepping on the clutch, shifting gears, loosening the clutch, and stepping on the throttle. With Wei Minsheng on the side, the two villagers will soon be able to operate the dump truck forward and backward, for the reversing into the warehouse, moving the warehouse and other examination items, in this spacious place seems to be completely unnecessary, as long as the operation for a period of time, familiar with some should be fine. If you say that driving is not something you can learn in two or three days, it is because you haven't seen a video of a five-year-old child operating a loader, something that people can do at the age of five, why can't a villager in his twenties do it?