The next day, Wei Qidong left the blacksmith shop, and also took Tang Xinyi out of Changping County and came directly to Nankou. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

Nankou, located at the intersection of Yanshan Yumai and Taihang Mountain 45 kilometers northwest of Beiping City, is the Great Wall pass on the south side of Juyong Pass, and is the gateway of Beiping to the northwest. The terrain in this area is complex, with mountains and mountains, and overlapping passes. From the south mouth through Juyong Pass to Xuanhua and Zhangjiakou in the west, it is a long and narrow basin from east to west, with mountains in the north and south, the center is concave, and the Pingsui Railway runs through it, and there are highways to complement each other, forming a traffic artery connecting the northwest, north China and northeast.

The north and south sides of the south entrance are the inner and outer Great Wall built on the back of the high mountain ridge again, there is only the sheep intestine trail passing through the mountain, so the south entrance is worthy of the name of "one husband is the pass, ten thousand people are invincible" of the natural danger place, people call it "the front door of Suicha, the back door of Pingjin, the throat of North China, the henchman of western Hebei." ”

Defending the southern pass can prevent the Japanese army from occupying Chahar Province, and then divide the troops into the Jin and Sui Zhi schemes, so that the three provinces of Chahar, Jin and Sui can be effectively defended. The special geographical location is destined to be an important strategic position in Nankou.

After coming to Nankou, Wei Qidong quickly reconnoitred the terrain, although he came to Nankou many times in the game, but no matter how powerful the game is, there is no way to restore the terrain 100%, after all, time has passed for so long. Sure enough, after some probing, Wei Qidong found a lot of differences.

In this way, Wei Qidong took Tang Xinyi around the south entrance non-stop for a few days, although it was very hard, Wei Qidong also saw that Tang Xinyi was very tired, but she did not complain.

Everywhere he went, Wei Qidong would stand on a high place, using a telescope to observe the surrounding terrain, and suddenly, his gaze was fixed, fixed on one of them, and carefully observed.

"Let's go, go there and have a look." Wei Qidong looked happy.

After walking for about twenty minutes, the two of them stood under a knife-cut peak, and this side was completely steep. Wei Qidong took Tang Xinyi around this mountain again, and found that it was difficult to climb on all sides, and this was an independent mountain.

"Xinyi, what do you think of the topography of this mountain?" Wei Qidong asked Tang Xinyi.

Tang Xinyi pondered for a moment and said, "The geographical location of this mountain peak is very good, and when you climb the mountain, you can overlook the two roads in the east and north. As soon as the battle began, these two roads would surely become the focus of Japanese control. If you use this mountain peak as a base and hold it to the death, you will almost be choking the throat of the Japanese. ”

"However, we just observed that the area at the top of the mountain peak should not be large, and there are not many troops deployed. Moreover, once the troops are deployed on it, it will inevitably become the main target of Japanese aircraft and artillery fire. ”

"Unless, if you can build a very strong bunker on it, but in such a place, with the current conditions, it is too difficult and there is not enough time."

After listening to Tang Xinyi's analysis, Wei Qidong's eyes lit up, and he nodded quite seriously, "Not bad, yes, go with me, and enrich yourself more, I believe that the woman who surpasses Kawashima Yoshiko should be just around the corner." ”

"I don't want to be that kind of woman, but I will definitely be better than her in the future, and if I have the opportunity to go head-to-head, I hope I can kill her." Tang Xinyi said heroically.

"Ambitious, for now, let's conquer this mountain first." Wei Qidong pointed to the mountain peak road with a height of more than 100 meters.

"Is it possible that you have a way to build a bunker on top of this?" Tang Xinyi was surprised.

"Don't you know when you go up?"

"Okay." Tang Xinyi did not admit defeat.

Immediately, the two purchased climbing equipment from the system, Wei Qidong was a veteran, quickly prepared, and instructed Tang Xinyi. The two put on helmets and protective gear, and then began to climb, with Wei Qidong on top and Tang Xinyi following below. Rock climbing is a sport that cannot be rushed, and it cannot be blind, and it is necessary to plan the route from time to time. Wei Qidong is the pathfinder above, and Tang Xinyi follows the old path that Wei Qidong has taken, but even so, it is a big challenge for a slightly weak girl like her.

When she climbed to about a third of the way, Tang Xinyi was already very tired, but she was still trying to persevere, and she didn't stop to rest for a while until she was too tired to do so. Wei Qidong didn't urge, he knew that Tang Xinyi had done a good job, so when she couldn't hold on, he would stop and wait for her.

Finally, after almost an hour of climbing, the two reached the peak, Tang Xinyi finally couldn't hold on and lay down, panting, her full chest rose and fell, and Wei Qidong couldn't help but look at it twice.

Quickly retracting his gaze, Wei Qidong began to look at this peak, the peak was about 2,000 square meters, and the strange rocks were craggy. Wei Qidong probed the soil structure again, almost the entire mountain peak, and he used lime to outline an area in the corner of the peak.

At this time, Tang Xinyi finally rested, and she hurriedly walked over.

"What are you?" Tang Xinyi asked suspiciously.

"What if we built a bunker here?"

"It will definitely cause a lot of trouble for the Japanese troops passing through that road." Tang Xinyi said solemnly.

"Okay, then let's start building a bunker here."

If she didn't know that Wei Qidong was a normal person, Tang Xinyi would have thought that this was a madman's words, and it was precisely because she knew that Wei Qidong was a normal person and very smart, and she felt even more incredible when she said such a thing. Tang Xinyi knew that Wei Qidong would not be untargeted, so she still obeyed his arrangement.

Wei Qidong was not in a hurry to start construction immediately, but waited until midnight, when it was almost impossible for anyone to appear in this area, he bought an excavator from the system, and began to work overtime under the command of the moonlight and Tang Xinyi's lights. When encountering rocks, they are directly crushed with the drill bit of an excavator, and then dug out.

Wei Qidong does not need to start construction in a large area, he only needs a circular area of about 13 square meters, about 1.5 meters deep, it only took less than two hours to basically complete, and some other details are not something that the excavator can bear. Putting the excavator into the system backpack, Wei Qidong immediately jumped into the hole he had dug and began to dig a branch road 1.5 meters below the hole to the side by hand.

The branch road is not too demanding, it can allow one person to crawl through, and manual excavation will be much harder, Wei Qidong and Tang Xinyi take turns to work and first fill the excavated soil and stone into the hole just dug. When the soil was almost full of the upper branch crossing, Wei Qidong used an excavator to dig out the soil again.

The two dug hard for several days before digging a passage more than ten meters long underground. Wei Qidong bought cement pipes with a wall thickness of about 10 centimeters from the system store, and put the cement pipes with a length of about 1.5 meters into the branch one by one to prevent the branch from collapsing after being impacted.

Then, Wei Qidong made a deep hole at the other end of the passage and docked it with the branch entrance. This deep hole is not big, Wei Qidong only put a short ladder in this deep hole, and when he comes out of the branch entrance, he can climb to the ground through this short ladder.

Wei Qidong pushed all the excess soil under the mountain peak, and then covered and camouflaged this deep hole, basically no trace was visible.

Tang Xinyi looked at everything Wei Qidong had done in the past few days with some curiosity, he opened up two deep holes, one large and one small, and then connected them with a branch in the middle, and now he camouflaged the small deep hole, and behaved very strangely.

Wei Qidong measured the size of the deep hole again, and then carefully tinkered with it.

Digging a hole is also so delicate, Tang Xinyi is even more curious, because Wei Qidong doesn't need her help now, she can only watch from the side.