Seeing warships and merchant ships sank into the sea one after another, Feng Quanxin was in full bloom, with a constant smile on his face, which was too satisfying and so happy.

"Xiaomei, come another 2,000 kilograms of water mines, or is it a magnetic bottom mine?"

"Yes, the mine has entered your backpack, one yuan, worth a total of 40,000 oceans. The system has been automatically deducted and you can use it at any time."

In fact, shipwrecking the river and sea sealing is a very expensive and clumsy approach. There are two methods for water surface blocking: shipwrecking and torpedo. In the early stage of the Anti-Japanese War, the Chinese Navy closed the river three times on the Yangtze River. The Jiangyin sealed the river in a way of shipwrecking the river, and the Madang sealed the river in a way of shipwrecking the river and mine laying it out. The Madang sealed the waterway from Madang to Wuhan was all carried out in a way of mine.

Among the two methods, mine blockade is aggressive, low-cost, powerful, wide-ranging range, and easy to deploy. There are three main ways to deploy mines: they can be deployed by special minecraft, or by aircraft, submarines, etc., or even manually deployed by merchant ships in ports controlled by our party.

Mines also have a deterrent effect and can punish the enemy. The working time is short and much faster than a shipwreck. The most important thing is that mine laying operations can be carried out at any time depending on the situation of war. In 1942, German submarines only carried out a small amount of mine laying in New York Harbor, which caused panic in the entire New York shipping.

The shipwreck can only form a static water barrier with a narrow range and non-aggressive range, which is relatively expensive and difficult to implement. The idea of ​​shipwreck sealing the river comes from practical experience, and shipwrecks on port entry and exit channels often affect shipping a lot.

There was also a successful shipwreck blockade during World War I. The UK used only three small scrap ships in the port of Seblu, Belgium. The port's channel was only 1 foot wide and ft deep, and it was blocked for a long time.

Feng Quan carefully calculated that the blockade area of ​​three nautical miles is calculated on average, if the blockade area is calculated on a half-navergent basis, if it is blocked with mines, it only needs to be equipped with 500 units to form a strong blockade line. Each unit is estimated at an average of 15 yuan, and the cost is only 7,500 yuan. If it is blocked with a steamer, it requires two or three thousand tons of commercial ships, with a total amount of about 15 million to 100 million yuan, which is several hundred times more than the price of mine blockade.

Fortunately, I have systematic help and mines are cheap. The Japanese warships and merchant ships have blocked the Lushun military port. I added fuel to the fire and added 1,000 small and 00 large mines. It was a bit extravagant to rush the foot.

The friends were busy with shipwrecking, detonating the fortress and other operations. Feng Quan sent the others away and came to a large tugboat reserved on the shore with a big sword. Damn it! It's so big, no wonder he could drag the battleship?

While no one was paying attention, Feng Quan took out 1,000 small mines of 493 kilograms and 00 large mines of 900 kilograms, densely packed with half a huge tugboat. Looking at these mines, Feng Quan smiled again. If he is not honest, he will let his friends push you all into the seabed later!

After the arrangement was made, Feng Quan got off the boat, found a big stone, lay on it, took out a cigarette, and smoked it beautifully, and earth-shaking explosions came from time to time in his ears. Damn it! How many shell birds did the Japanese prepare?

The loud explosions finally stopped one after another. Feng Quan, who was very addicted to smoking, had already smoked three three-bay guns, Cuihua, Big Horse Spoon, and Li Yun was late.

"The boss, it's all done, it's absolutely true." Damasan was a representative for a rare time.

"Okay, have you seen this tugboat? There are 3,000 mines on it. You can summon your subordinates and we will all go up. If you don't have any mines, leave! Let's go back to the base together." Feng Quan said lazily.

In fact, when it comes to the disadvantages of shipwreck blockade and mine blockade, shipwreck blockade has a greater defense power, and it takes a lot of effort to engage in damage. However, the shipwreck is not that simple. In addition to the shipwreck, various auxiliary fortifications are also required. For example, after the Jiangyin shipwreck blockade was closed, it continued to carry out various auxiliary fortifications such as stone for more than three months to strengthen the defense of the blockade line.

However, no matter how strong the shipwreck blockade is, it always belongs to a simple blockage nature. The mine blockade is somewhat offensive. What is even more terrifying is that Feng Quan arranged the mine as a huge magnetic sinking bottom thunder, and nothing can be seen on the water surface. It is very concealed or non-triggered.

No matter which mine the Japanese warship and merchant ship is close to, the powerful mine can sank a medium-sized warship or severely damage a large warship. There is no need to mention those small warships and merchant ships.

Feng Quan also wanted to lay a mine on his own, but his friends refused. Just kidding, there were more than 1,000 friends in front of him, and the boss worked in person, which was unscientific.

In fact, whether the Kwantung Army provoked a war during the September 18th Incident or the troops stationed in the Asahi Japanese army to send troops to the Northeast, neither the emperor nor the cabinet meeting was approved. Therefore, after the incident, the senior army leader was very nervous. But to the surprise of the army, at the subsequent cabinet meeting, the base camp unanimously approved the fait accompli for the troops stationed in the Asahi Japanese army to enter the Northeast and made a decision to allocate additional funds for troops.

This time, the Kwantung Army sent troops to Shanhaiguan, and it was approved and approved by Emperor Hirohito. Although Emperor Hirohito expressed his agreement with the Kwantung Army's invasion of Rekawa, he was somewhat worried about the Kwantung Army's crossing the Great Wall to occupy the Luandong area south of the Great Wall.

When the Kwantung Army launched the Battle of Yuguan, Britain and the United States filed serious protests against the Japanese government for their rights and interests, and Emperor Hirohito was also frightened and uneasy about it. In fact, Hirohito was worried that he would pay a heavy price to go rashly in the face of insufficient preparation.

The Emperor summoned the Deputy Chief of Staff of the Army, Shisaburo Masaki, and asked in person: "Have the Kwantung Army retreated from the Luanhe Line?" After being summoned, Masaki immediately sent a secret telegram to the Chief of Staff of the Kwantung Army, saying, "If you do not retreat immediately, you will issue a retreat order under the order."

But at this time, the two teams along the Great Wall were intertwined, so how could they evacuate so easily? The little Japanese were worried that the Chinese army would poke their chrysanthemums from behind while they were retreating.

Kanto Army Commander Nobuyi Muto has been in a state of trouble these days, and the rear is in chaos. Several cities have been captured and destroyed by the Volunteer Army. I heard that his good friend Puyi was so scared that he was peeing his pants. It is probably impossible to be a man. It is also difficult to evacuate. I don’t know who has blown up the plane. If you want to launch an attack again, I’m afraid that he will follow in the footsteps of the Fourth Regiment of the Eighth Division.

Nani? I heard that the explosion in Lushun Military Port last night was all night. What happened? Forget it, let the navy idiots fend for themselves?

Shenma? Now the base camp is asking us to retreat, how to withdraw? The helpless Muto Nobuyi had to secretly order the Kwantung Army to withdraw from the Great Wall one after another, but he still "has to maintain a situation that threatens the rebellious forces in North China."
Chapter completed!