For this request, Tang Ning naturally would not refuse. Grunov, an expert in metal stamping technology, played an important role in the establishment and development of his arsenal, and the two worked together very happily, not to mention that he introduced himself to Dr. Ward, who invented the little blue pill.

Downing immediately rushed to Kokura and took Higashino back to Berlin to remind Okubo of the physical examination of workers and technicians, as well as the pollution treatment of the factory, because Downing always felt that Grunov's lung disease might be caused by his long-term work with this metal.

After sending Grunov to Berlin, Tangning did not return to Japan immediately, but continued to find hospitals and experts to try all means to treat Grunov.

After World War II, Germany and Berlin were divided into four regions by the Soviet Union, the United States, Great Britain and France. In 1949, the Soviet occupation zone including East Berlin was established as the German Democratic Republic (GDR or GDR), with its capital in East Berlin, while the US-British-French occupation zone was established as the Federal Republic of Germany (West Germany or the Federal Republic of Germany) with its capital in Bonn until the reunification of the two Germanys. The American-British-French-Soviet occupation pact guaranteed an air corridor between West Germany and West Berlin.

West Berlin is the territory of West Germany in West German law and the Basic Law of West Berlin, because the territory of West Berlin is completely in the territory of East Germany, the Soviet Union in order to force West Germany to abandon West Berlin, forced West Berlin to cut off water and food, this move made Western countries united, there are many planes every day to transport supplies from West Germany to West Berlin, East Germany in order to isolate the East German people to West Germany, so along the border to build a wall on their own territory, the whole of West Berlin surrounded. Initially made of barbed wire, it was replaced with a more durable brick wall.

Downing had heard about this "anti-fascist defensive wall" back then, and remembered that it was not until 90 that the wall was torn down. However, when he arrived at the scene, Tang Ning found that the original report had been misunderstood. It was always thought that the Berlin Wall was a wall, but in fact it was two parallel walls, about 150 meters apart. The area in the middle is the so-called "death zone", which contains police dogs, watchtowers, floodlights, barbed wire, roadblocks against vehicles and armed guards. The 96-mile (1 mile or 1.6 km) border encircles the democratic and capitalist West Berlin, isolating it from the communist East Berlin and the surrounding East German countryside.

These days, Downing came to the vicinity of the Berlin Wall when he was fine, because he found that the creativity and brains of the people really have no limits, and although the Berlin Wall was built very strong and without any gaps, people can always think of all kinds of strange ways to escape.

In the beginning, when the fifteen-story defense line of the Berlin Wall was not fully built, everyone could still rush through it in groups, but after it was built, the rush could not be rushed. But there are other ways to think about it.

The Berlin Wall is not monolithic, there are always a few gates, a few stops. So an Australian boy whose lover was stranded in East Berlin came up with the idea of a traffic stop. After investigation and research, the traffic station is blocked by railings, although the railings are strong and constantly hitting, but the railings are relatively high, if the car is short enough. You can drill directly under the railing. And so the plan was born, put your own darling in the suitcase. While the police are not looking, just drive at full speed and get under the railing to West Berlin in one fell swoop. Just do it, and that's how the Australians took their bride to West Berlin.

If the story ends here, there is no humor. But that's when another Argentinian lad came in. He fully demonstrated the enthusiasm of the South American people, but they did not like to use their brains, and he thought that this plan was good, and decided to do it himself. The so-called compliment is really compliment. He even borrowed the same car directly from the Australians! Speaking of which, it is not easy to find such a short car.

But the problem is that he didn't do any disguise, he didn't even change the license plate, and just drove away. The Argentines swaggered into East Berlin in the car, which had already been reported in the newspapers in no more detail. When the East German police saw it, why was this car so familiar, but no one could have guessed that there were such bold people in the world. The policeman asked: 'Did this car come to East Germany before?' The Argentine replied, "Of course not." The police themselves were confused, waved their hands and let them go! As a result, a week later, the same car, taking another couple, to West Berlin in the same way. On the occasion of their wedding, the grief-stricken East German police installed countless vertical iron bars under the railing, not to mention a car, not even a snake could get out from under the railing!

Another one with technical content, a young man from East Germany used a river dive to reach West Germany. What does diving look like in everyone's mind? Wetsuit? Diving goggles? In short, how much ability can he have alone, and everything must be made by himself, at most a little rough personal diving tool? But this young man built his own submarine! He uses a motorcycle motor, steel plates assembled by himself, navigation, compressed gas and other systems. I built a small submarine for personal use at home. What about the quality? I think it can be certified by ISO9002 International. The submarine was underwater for more than five hours before it emerged from the West German side without incident. Some classmates said, 5 hours is not too long, that is no way to do things, you try to take a small motorcycle motor to dive. The small submarine was, of course, a miracle, and the young man's escape led to an immediate job in West Germany, where major mechanical companies vied to hire him as a designer. I heard that he really achieved a lot of achievements in mechanical design later.

What's even more amazing is that there is also the use of hot air balloons to escape, and the hanging baskets under the balloons contain two families - two couples and their four children. This balloon was made entirely by hand by these two families and took years to complete. During this period, two families were self-taught, ranging from materials science, engineering, gas dynamics, meteorology...... It was until the establishment of the home laboratory that the 28-meter-high hot air balloon was successfully made in the family's backyard! After investigation, this hot air balloon is the largest hot air balloon in European history and is recorded in the Guinness Book of World Records! The balloon was spotted by the police as it passed through the Berlin Wall. The policeman was dumbfounded, but he still remembered to shoot. With this shot, the balloon's good craftsmanship came into play. The fugitives manipulated the hot air balloon to rise to an altitude of more than 2,800 meters, not only could not be shot by gun, but also could not even shine a searchlight! The police had to urgently call in Air Force support to find a hot air balloon and shoot it down. The Soviet Air Force "Su" and "Mi" fighters immediately sorted, but after 28 minutes of flight, the hot air balloon had completed its mission and landed safely. (To be continued......)

PS: In fact, there are many other methods, such as hiding people in the hood, digging tunnels for six months, driving a large truck to knock out a hole in the fragile part of the wall and then rushing out, etc., etc., everyone is interested in searching for it!