Seeing Zhong Yi repeatedly observing Zhaobao Mountain and Jinji Mountain on the other side, Gong Weiqian asked: "Mayor, are you worried about the coastal defense problem after the development of the new Yinjiang River in the future?" ”

"yes." Zhong Yi nodded and said, "It is foreseeable that when the planned new Yinjiang River is developed, it will definitely become a thorn in the side of the entire Japanese army invading China, and the Japanese army will definitely dispatch the army and navy to attack on a large scale, I am not too worried about the Japanese army, but for the Japanese navy, it can only rely on coastal defense." ”

"yes." Gong Weiqian thought deeply and said, "If the warships of the Japanese Navy are allowed to go up the Yinjiang River to the mouth of the Sanjiang River, then the entire Yinjiang City will be within the range of the Japanese naval guns!" In this case, it is meaningless for us to build Yinjiang, because no matter how prosperous the city is, it cannot withstand the bombardment of artillery. ”

Zhong Yi said: "So, you must give Yin Jiangan a lock!" ”

Gong Weiqian said: "Zhaobao Mountain and Jinji Mountain on the other side are the keys chosen by the mayor?" ”

"Yes." Zhong Yi nodded, and said, "From the mouth of the Yinjiang River to the mouth of the Sanjiang River, the terrain is flat, almost no danger can be defended, Zhaobao Mountain and Jinji Mountain can be said to be the only two commanding heights, to be honest, these two hills are too small and too short, the altitude is not even a hundred meters, but unfortunately, there is no better choice." ”

Gong Weiqian nodded and said, "Choose the tall one among the short ones, and that's the only way to go." ”

After a slight pause, Gong Weiqian said again: "But fortunately, there is still a chance to make up for it through the design of the fortress, as long as the fortress is built strong enough and the firepower is fierce enough, there is still a chance to lock the Yinjiang waterway." ”

Zhong Yi sighed lightly and asked, "Secretary General Gong, do you want to dabble in fortress construction?" ”

"That's nature." Gong Weiqian said very immodestly, "My graduation project is to design and build a fortress. ”

"Oh?" Zhong Yi was surprised when he heard this, he really didn't expect that Gong Weiqian and his eldest brother and second uncle were peers, and their graduation projects were all fortress design and construction.

At that moment, Zhong Yi said again: "Dare to ask which university Secretary Gong is studying?" ”

"Cambridge University." Gong Weiqian replied, with a slight pride on his face.

As a PLA from the 21st century, Zhong Yi does not think that it is great to study in a famous university abroad, such as West Point, Zhong Yi has never felt how great West Point is great, let alone that West Point is better than any military school in China.

But for young people in this era, the experience of studying abroad, especially the academic qualifications of famous universities like Cambridge and Oxford, is enough to be proud of.

Zhong Yi only felt that it was really a coincidence, and he was in the same school as his eldest brother and second uncle.

At that moment, Zhong Yi said again: "You are actually an international student at Cambridge University, so do you know Zhang Yuandong and Zhang Yuanxi?" ”

"I don't know Zhang Yuandong, but I know, Zhang Yuanxi knows, he is two times higher than me." Gong Weiqian smiled, "The two brothers are typical rich children, most of the Chinese students in the UK have received help from their two brothers, and I also received the favor of the Far West seniors during my stay abroad." ”

"That's a coincidence." Zhong Yi laughed and said, "Secretary General Gong, you may not know that my fiancée happens to be the fifth lady of the Zhang family, the younger sister of Zhang Yuandong and Zhang Yuanxi. ”

"Really?" Gong Weiqian was stunned when he heard this, "It's really a coincidence." ”

Zhong Yi could feel that Gong Weiqian's attitude towards him had become closer.

At that moment, Zhong Yi said again: "Secretary General Gong, since you are a top student at Cambridge University, and you are studying architecture, and you still have to build a fortress for your graduation project, can you tell me how to build Zhaobaoshan and Jinji Mountain Fortress?" Is it possible to withstand the attack of the Japanese army? ”

Gong Weiqian nodded and said: "The main defense of the fortresses of Zhaobaoshan and Jinji Mountain is the bombing of the Japanese air force, because the large-tonnage warships of the Japanese Navy can't actually enter the Yinjiang River, and due to the restrictions of navigation conditions, the battleships of the Japanese Navy can't enter the Yinjiang main road, and even the large-tonnage cruisers can't do it. ”

Zhong Yi nodded subconsciously, the navigability of the Yinjiang River is indeed limited, a 2,000-ton sea ship is okay, a sea ship of more than 3,000 tons is extremely difficult, and more than 5,000 tons can only be navigated in the rainy season.

And most of the cruisers of the Japanese Navy were more than five thousand tons.

Gong Weiqian continued: "Therefore, the naval guns of the Japanese Navy are not actually the main threat, the main threat still comes from the bombing of the Japanese army and even the naval aviation, and Japan's largest aerial bomb should be a thousand-pound class, so the design standard of Zhaobaoshan and Jinjishan fortresses must be able to defend against the bombing of at least 2,000 pounds of aerial bombs!" ”

"Not enough!" Zhong Yi said quietly, "I'm afraid the standard of 2,000 pounds is not enough. ”

When he said this, Zhong Yi was thinking about the Turtle Mountain Fortress and the Snake Mountain Fortress in Wuhan.

The design standards of Kameyama Fortress and Snake Mountain Fortress were also 2,000 pounds, but in the end, they were destroyed by the crazy old devil Higashikurenomiya Tsukihiko.

"Two thousand pounds should be enough." Gong Weiqian said, "Because Japan's largest bomber can only carry a thousand-pound aerial bomb. ”

Zhong Yi said: "Haven't you thought that it is possible for the Japanese army to fill up the cabin with less fuel and fill the cabin with explosives, and then launch a suicide bombing of the fortress with planes and aerial bombs?" ”

"This ......" Gong Weiqian suddenly gasped.

"So, two thousand pounds is really not enough." Zhong Yi said.

"Then it can only be strengthened by improving the top structure of the fortress." Gong Weiqian said, "Because if you simply thicken the top layer of the fortress, not to mention the high cost, our officers and soldiers hiding inside the fortress are afraid that it will be difficult to withstand the invasion of the blast wave, and they will eventually be shattered alive!" ”

Zhong Yi said: "This is what I am most worried about. ”

When the Turtle Mountain Fortress and the Snake Mountain Fortress were destroyed, not many officers and soldiers were actually killed, and the vast majority of the officers and soldiers were shocked to death by the violent shock wave generated by the explosion.

Gong Weiqian muttered: "Regarding the strengthening of the top layer of the fortress, I do have some experience, but it has not been verified by examples, and I don't know if it is effective. ”

Then, Gong Weiqian put his ideas and plates out.

After listening, Zhong Yi just wanted to say to Gong Weiqian, genius creativity!

Gong Weiqian's idea is actually to install a layer or even multiple layers of protective layers similar to tank reactive armor on the top layer that is most vulnerable to aerial bomb attacks, and the bombing of small-tonnage aerial bombs will not trigger such a protective layer, but if it is bombed by aerial bombs of more than 1,000 pounds, the protective layer will passively detonate outward.