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Before Zhao Zhenzhong could reach the door, the door was pushed open by the people outside, and then agile figure rushed in. After seeing Zhao Zhenzhong, the man hugged him warmly. After letting go, Zhao Zhenzhong looked up and down at the visitor and said with a smile: "Xiaohao, you have grown a lot taller in the past two years." Then he asked again: "Why are you back now? Don't tell me in advance? Is there anyone else coming?"

Zhou Hao's head is now rushing upward again, already 1.78 meters tall, less than 4 centimeters shorter than Zhao Zhenzhong. After hearing Zhao Zhenzhong's words, Zhou Hao did not answer, but asked with a smile: "Are you very surprised to see me? Are you very disappointed to see my sister?"

Zhao Zhenzhong was thoughtful by him, and he couldn't smile bitterly. He reached out and shot him on the head, saying, "You guy is still not in a good shape, answer my question first."

"Didn't you ask White to take some students to study in the United States in the summer, and ask Li Yunfeng to hand over a letter to my sister? This time I specially transported a batch of supplies you need back, and at the same time, check your current development, so that I can go back and report to my sister in detail. I didn't expect you to have created such a situation." Zhou Hao said with some emotion.

"I'm not waiting for time, so it's not okay to hurry up. Zhang Zongchang is about to be finished, and the Northern Expedition Army's people are about to enter Shandong. After that, not only Shandong, but also the entire China is still in chaos. Since we have come to this world, we must fulfill our responsibilities. If we don't hurry up, it's not okay to hurry up." Zhao Zhenzhong sighed, "I want to be faster, but most of the people in the Yimeng Mountains are illiterate, so we can only try our best to eliminate illiteracy first, and then train the various personnel needed from scratch.

Take the training of recruits for example. The period specified is 6 months. In addition to allowing trainees to improve their physical fitness as much as possible within this extended time, they also need to carry out literacy activities. A qualified recruit not only needs military skills to meet the training requirements, but also needs to recognize words more than 1,000 words, and have corresponding reading and writing skills. In order to make as many trainees as possible become qualified recruits, our instructors who are responsible for teaching tasks are worried."

"Haha, Lao Zhao, it seems that you are deeply touched. You feel a little old-fashioned when you speak." Zhou Hao said with a smile, "I understand this principle. Just as my sister often says, it is very difficult to make 100,000 yuan from one yuan to a few million yuan, but it is relatively easier to make 100,000 yuan to a few million yuan. This is also the process of resource accumulation."

"Yes, I remember that Uncle Shi had worked a lot when he founded the first canning processing factory in Nanyao, but now with the development of Sihai Industry, it is not difficult to add a few more companies." Li Yuntian, who brought Zhou Hao to the headquarters of the Guard, also said with emotion.

"The old saying that everything is difficult at the beginning makes sense." Zhao Zhenzhong nodded in agreement. Then he asked again: "Have you unloaded all the goods?"

"We have already been transported to the Dazhushan base. I know James's family, and Yuntian is familiar with him. After unloading the goods at the Mobil special terminal, they are transported directly to the base." Zhou Hao said that the goods were in good condition and asked again: "By the way, you have to talk to me about the base. I haven't seen each other for more than two years, but now it has changed a lot. The guy in Chengshan said that without your order, even my uncle, could not see some places."

"Haha, don't blame him, I don't know you're coming back. I ordered him at that time that some important places where his garrison team was responsible for the care of him could not let anyone in and out without my order. I'll take you to see it just by looking back. There are some questions to listen to your opinions." Zhao Zhenzhong explained with a smile.

In the nearly 10 days before the Spring Festival, Zhao Zhenzhong and Zhou Hao inspected some representative places such as the water conservancy system, road traffic, several factories, initially completed fortifications and other representative places, and took him to inspect the construction of the Dazhushan base in detail.

In the confidential room of the Dazhushan base, when Zhou Hao learned about the details of the large-scale construction project that had been under construction for nearly three years, he couldn't help but be amazed: "Old Zhao, your idea is a bit amazing in this era, right? If it is just a large storage base, I think there is no problem with another 3 or 4 years of construction time, but if it becomes a super-large material transfer base, and it is a very hidden transfer base, with a distance of more than 200 kilometers, according to the current construction progress here, I think 20 time is not enough."

"The project progress is a bit slow now, but that is because of the construction of warehousing bases and transit bases at the same time. After three years and the warehousing bases are completed, the construction progress here can be at least doubled. In addition, the construction progress of Wulian Mountain, Yishan and Lushan has started construction and Qingfengling, which is about to start construction, has a total of 5 places. Except for both ends, the others are moving in both directions at the same time. It is still possible to strive to complete within 10 years. This is the result of my repeated investigation and calculations between Liu Chenglin and I."

"But Lao Zhao, have you considered various dangers that may be caused by different geological conditions during the construction process, such as natural causes such as landslides, seepage, and human risks such as being discovered by outsiders or leaked news? These may lead to the huge cost of this project being abandoned halfway." Zhou Hao was still worried.

"Look, this is the construction route we chose." Zhao Zhenzhong took Zhou Hao to the large sand table stored in the confidential room, pointing with a small wooden stick and said: "The construction routes we chose are basically spread along the ridge direction, trying to avoid the troublesome factors such as ditches and rivers that may be encountered. From Dazhu Mountain to the southwest along the ridge, it is Wulian Mountain, and then from Wulian Mountain to the northwest, cross Qingfeng Mountain to connect with Yishan Mountain. The geological conditions along the way are basically granite or limestone. Although the construction difficulty increases and the construction distance is extended, it also avoids possible dangers such as landslides, seepage and settlement. In other words, we are equivalent to drilling a passage on a large piece of granite deep underground."

"Old Zhao, it's hard for you to come up with this crazy plan." Zhou Hao grinned, "Although you try to avoid construction difficulties as much as possible, there will always be accidents. Moreover, the construction at a depth of dozens of meters deep underground requires too many equipment, and there are not enough personnel."

"That's right. There are not enough personnel in the existing ones, but we will try to increase them as much as possible. And with the war, there will definitely be a large number of refugees. We are going to take in and select some young and strong people to supplement them into the construction team, and rotate them in a three-year cycle." Zhao Zhenzhong did not avoid the difficulties in it, and continued: "As for how I came up with it, don't forget that I had been in the army before. Although some important large-scale military projects were not witnessed at that time, there were still some statements in the army that were widely circulated, especially the relevant large-scale underground military projects. The plan I came up with now is just to combine the underground submarine base with the warehousing center and the underground transportation channel."

"This is a grand project far beyond this era. If the underground transportation channel of more than 200 kilometers is laid on the railway tracks and used to pull them with a motorcycle, wouldn't it be a subway?" Zhou Hao sighed.

"If we talk about the scale of construction and the time span of construction, it is indeed second to none in this era, but it cannot be said to be far beyond this era." Zhao Zhenzhong corrected: "In this era, there are already subways in the world. In 1896, Budapest, a city of Austro-Hungarian Empire, opened the first subway in the European continent, with a total of 5 kilometers and 11 stations, and is still in use today. Up to now, underground railways have been opened in London, England and Paris, France. However, according to our current situation, both technology, equipment and personnel culture level do not have the conditions to open a subway. As long as a transportation channel of more than 10 meters wide and four cars can be built within 10 years, I would be grateful."

"If this passage is really built on time, plus the fortifications completed by then, Yimeng Xinlai will become a large fortress that cannot be conquered by foreign aid." Zhou Hao also began to be excited, "At that time, in front of the dense firepower points on the mountain and in the underground, the ground attack will basically be ineffective. Even the air offensive will be basically useless when new equipment participates in defensive operations."

"It depends on the efforts of you and electromagnetic technicians who specialize in studying electronics and electromagnetic technicians. Although there is a lack of a computer fire control system, it is impossible to coordinate artillery and radar. However, under the guidance of radar, under the guidance of the radar, the dense anti-aircraft guns and anti-aircraft machine guns should also achieve good results in defending the enemy from the air." Zhao Zhenzhong reminded.

"Old Zhao, don't worry about this. Don't forget what I did when I came back this time." Zhou Hao promised: "Now we can use American electronic devices to assemble a radio station with World War II level. Give me a few more years, and I will definitely be able to create a radar that exceeds the level of World War II."

"Haha, then in this case, I can basically feel at ease in Shandong. In the future, overseas materials will be transported into the underground storage center through underwater transportation, and then transported to Xinlai, Yimeng, through the underground transportation channel. Turn the Yimeng Xinlai area we are now controlling into a nail nail in Shandong, and accumulate strength for future strategic planning." Zhao Zhenzhong also laughed, "In addition, the construction of this channel has also opened up a channel for the entry and exit of materials and personnel in the Yimeng Mountains after the war, and it is also conducive to improving the living standards of the people there as soon as possible."

"Old Zhao, I think the Dazhushan base should be adjusted now." Zhou Hao suggested, "The children and some non-military personnel taken in this base are temporary arrangements before we obtained the Xinlai area of ​​Yimeng. Now that we have a broader and more stable base, these non-military personnel should be moved."

"That's right. I have formulated a plan for the relocation of non-military personnel in the Dazhushan base and are scheduled to be transferred in batches after the Spring Festival." Zhao Zhenzhong nodded and agreed, "In this way, we can further increase the construction personnel in the Dazhushan base and speed up the project progress."

"What is the construction progress now?" Zhou Hao asked.

"There is not very consistent everywhere. Dazhushan is the fastest here. It has started horizontal construction from underground. Directional blasting is carried out every day by using small doses of medicine. It can move about 15 meters in the cross section of granite 16 meters wide and 5 meters high. The other side of Yishan is similar. Wulian Mountain and Qingfengling have just started horizontal construction, and the progress is not stable. You can move about 10 meters in both directions every day. The staff in all places work in three shifts and are working day and night. It is just that the construction materials such as drill bits and explosives consume a lot." Zhao Zhenzhong introduced.

"Don't worry, my sister and I are responsible for purchasing construction materials such as drill bits and explosives for you in the United States." After Zhou Hao agreed, he began to calculate: "In this way, all places can drive about 70 meters every day, about 25.55 kilometers a year, and more than 255 kilometers in 10 years. It is really possible to complete the construction within 10 years. Lao Zhao, what is your construction plan name?"

"This is a material passage, a Great Wall built underground and cannot be destroyed. The entire project is called the 'Great Wall Plan'." Zhao Zhen couldn't help but think of the famous project in the Taihang Mountains in later generations.
Chapter completed!