A so-called "insurmountable line of defense" can be breached so easily. It can only be said that the strategic cost-effectiveness of a permanent fortress defense line is indeed not as high as imagined.
In the three eastern provinces, there are not only these underground fortifications like the Oriental Maginot.
It's just that these were not built by the defending country, but neon signs at the end of the road, defensive fortifications built to avoid the Soviet attack.
The Japs in their final struggle went crazy, and a lot of information was lost in the long river of history.
However, Chen Wenzhe is able to communicate with the long river of history and obtain this information buried underground.
For example, there is one treasure trove in Dongning Fortress, and there is another fortification that is not simple, because it is an underground city.
This underground fortification with hidden treasures is also located in the northeast of our country.
At that time, the construction was simple, and it also consumed a lot of manpower and material resources from Neon.
These lines of defense are by no means just a wall as everyone thinks. Instead, they are built in tunnels according to the terrain. The complexity of their internal structures is unimaginable.
Viewed from the outside, this line of defense is unremarkable, but once inside, you will find that this is actually an underground city.
Its scale is huge and definitely beyond our imagination.
It has its own circulation system, enough for Neon to place tens of thousands of soldiers here.
There is enough space inside the city, and a large amount of food is stored in it for long-term combat use.
In terms of weapons and ammunition, the Japanese army also made adequate preparations.
Logically speaking, for such an underground city, everyone should have withdrawn after Neon announced its surrender, but the Japanese army did not do so.
After the surrender of Neon in 1945, the Soviet Union took over the entire northeastern region of our country, and the people gradually returned to normal life.
One day, an old farmer accidentally dug a hole in the underground defense line while working in the fields.
After discovering that this is a secret base of the Japanese army, and there seems to be a large number of Japanese troops hiding inside the cave entrance.
The farmer panicked and ran to report the situation to the Soviet troops in charge.
Upon receiving such news, the Soviet Union sent a large number of troops towards the entrance of the cave.
Due to the existence of the defense line, the Japanese army had the confidence to fight the Soviet army.
This line of defense also caused a lot of trouble for the Soviet army at first, but the Japanese army had been underground for a long time and had insufficient combat awareness.
Therefore, facing the Soviet army that had fought against the German army, they still fell behind and were eventually wiped out within a few hours.
Later, when counting the bodies of the Japanese soldiers, the Soviet army was shocked.
This seemingly inconspicuous defense line actually contained more than 2,000 Japanese troops.
After the Japanese army was annihilated, this line of defense was not destroyed, but was left as a witness to that period of history.
Later, it was transformed into a holy place for the Red Revolution.
After that, many Chinese people will visit this patriotic base every year.
As the first provinces to be invaded by neon, the three northeastern provinces have suffered particularly tragically.
The eight-year War of Resistance was changed to the Fourteen-year War of Resistance, which is to let us remember the history that happened and not forget the pain of the past in the changing times.
And there are definitely more underground fortifications like this line of defense in the three northeastern provinces.
Obviously, all the materials and treasures in that underground city fell into the hands of the Soviet army at that time.
We certainly don’t know this, but we can imagine it.
The Kwantung Army at that time, in order to achieve the goal of occupying the Northeast for a long time, built many secret fortifications.
And if you say that among these fortifications there are only military supplies and living supplies, no one will believe it.
No matter who you are, you must keep your most precious things in the safest place.
Obviously, these underground defense lines, fortresses, permanent fortifications, and underground castles are the safest places.
For example, in Qqhe, they regard Qqhe as an important stronghold in the northwest border of Black Province, and they also built huge underground fortifications there.
Construction of the underground fortifications there began in 1931 and took five years from 1936 to 1936.
The people who built the fortifications were all laborers captured by the Japanese army, including Chinese, Koreans and Mongolians.
After the underground fortifications are completed, these people will neither live nor die.
Nowadays, when people are digging for construction projects in Qi City, they often find numerous bones.
The underground fortifications of the Japanese army in Qi City have two landmark buildings on the ground.
One is the big black bag and the other is the Zhongling Pagoda.
Daheibao is what the locals call it, and it still exists in the southern suburbs.
It's actually an oval ground military facility, shaped a bit like a big black bag.
This was originally the Japanese army headquarters, with three floors underground and a dome on the ground, where troops could be stationed, stored, commanded, communicated, etc.
Some experts believe that this should have been a complete communication facility for the Japanese army at that time.
The main function is to monitor the radio signals of the Soviet Far East Communications and Intelligence Secret Service.
Zhongling Pagoda is a tower-like building built by the Japanese to store the ashes of Japanese soldiers who died.
In 1939, the Soviet army and the Japanese army broke out in the Battle of Nomenkan in the Mongolian region. The Japanese army was completely defeated in the battle, resulting in the loss of more than 2,000 people from the Japanese Second Regiment.
The Japanese army built a Zhongling Pagoda specifically for this purpose to store the ashes of those who died in the war.
Now there is only one "washing pavilion" left here. It is said that this place is where the Japanese came out to wash their hands after worshiping the souls of the dead in Zhongling Pagoda.
The Zhongling Pagoda no longer exists and was replaced by the Qi Workers’ Cultural Palace.
The Japanese army's underground fortifications in Qi City had about five entrances and exits.
In addition to the above two, there are three others.
They were the military police, the train station, and the Japanese military cremation plant at that time.
In the early days of liberation, the local garrison sent engineers to conduct inspections of underground fortifications.
There are secret passages inside the fortification, and various facilities such as drainage and electricity are complete.
After advancing for a certain distance, everyone withdrew and terminated the detection because the detection equipment showed the presence of poisonous gas sources such as mustard seeds.
After the founding of the country, the government organized many inspections and explorations.
It was just because the underground fortifications emitted an unpleasant smell that made people extremely uncomfortable, and ultimately ended in vain.
Qi City was the largest production site of poison gas and chemical weapons for the Japanese army in my country at that time, and it has been confirmed without a doubt.
When the Japanese surrendered, they destroyed the map of the fortifications and fled in a hurry. Many gas bombs and biological and chemical weapons were not dealt with in time, which resulted in leaks and have remained until now.
The underground fortifications are closely related to the Japanese army's research on biological weapons, and there are many biological and chemical weapons residues in them.
Today, this underground fortification still serves as strong evidence of the crimes committed by the Japanese army in invading China.
However, what the Japanese army did underground in Qqhe and what they hid is still an unsolved mystery.
Therefore, it is still impossible to explore and excavate, and in such a place, it is obvious that the materials and wealth retained inside are all left inside.
And there are still so many military facilities such as military bases, underground castles, mountain defense lines, bunkers, etc. hidden in the three northeastern provinces.