After thinking about it all night, Marin still didn't make up his mind. Because he thinks that the brutality of the devils in later generations has nothing to do with the people of this era. At this time, there were three kinds of people in Japan - nobles, samurai, and commoners.

The aristocracy is the ruling class, greedy and stupid, a bit vicious; The commoner class was more miserable, driven by the nobility and samurai class as cattle, and belonged to the out-and-out victim class; And the samurai class, that is, the vicious dogs raised by the aristocratic class, are the most vicious. The Japanese who attacked the coastal areas of the Ming Dynasty belonged to this class.

However, the aristocracy and samurai class made up a small part of the Japanese population and did not make up the mainstream. If smallpox were to spread, most of the unlucky ones would be civilians. These "primary school students" civilians, who are generally only about 1.5 meters tall, are submissive and driven by others, and they are about the same as Yang Bailao. Harming them with smallpox, Marin could not find any sense of accomplishment.

As for the more vicious Japanese nobles and samurai, because there were not many of them, they could be killed with muskets, and there was no need to use smallpox to kill them on a large scale.

Moreover, if smallpox was transmitted to Japan, it would be easy to be brought to the Ming Dynasty by those who attacked the coastal areas of the Ming Dynasty, which was not what Ma Lin wanted to see.

So, Marin eventually gave up on the idea of spreading smallpox to Japan. However, the virus still needs to be cryopreserved. After all, if you want to get a vaccine in the future, you also need a source of the virus.

To this end, Marin planned to build a freezer in the snow-capped mountains of Iceland to preserve the underwear and blankets used by the smallpox deceased, collected by people sent to Spain and southern France.

But after thinking about it, it suddenly occurred to Marin that Greenland, which is only separated from Iceland by a strait, seems to be more suitable for preserving the smallpox virus.

This is because, although Iceland is located near the Arctic Circle, due to the influence of the North Atlantic Current, the temperature is not very low, and the temperature can even reach more than 10 degrees Celsius in summer.

Greenland, just a little west of Iceland, is different, where there is no North Atlantic Current, and even the Labrador Current. So, although the latitude is about the same, Greenland is much colder.

It seems that only parts of Greenland's southwest coast will thaw and expose the surface in summer due to the warm Greenland current. In most other areas, the coast is unusually cold. In its interior, there are even low temperatures of tens of degrees below zero. It would be fitting to set up a cold storage store for viruses here.

As for the location, Marin has also planned it – on the eastern coast across the sea from Iceland......

It is bitterly cold all year round, and even the sea freezes, and only in summer does the sea thaw and ships can enter. It's summer, so you can get some clothes and blankets from the smallpox dead and transport them for storage. When the vaccine is needed, send a sailor who has been vaccinated with cowpox to take a relic out and infect the cow, make cowpox, and plant it on the sick.

Right now, in eastern and southern Spain, as well as in the south of France, in the Naples region of Italy, there are already many people infected with smallpox, and every day someone dies, there is no shortage of clothes and blankets for the dead of this smallpox, and it is easy to collect.

Because all the spies stationed in Spain, France, and Italy had returned home to receive cowpox (only John. Rafi and other high-level spies who can't easily go to the North Sea Country are sending cowpox to the door to plant), and at the moment, Marin doesn't know how many people in these three areas have contracted smallpox.

However, before the spies returned, millions of people had been infected with smallpox in southern France, and tens of thousands had died. Spain, because of quarantine measures and a less dense population, has only three or four hundred thousand infected people, but it is widely distributed. And in the Naples region, there are also 200,000 infected people......

This is only the data before the spies returned home, but Marin estimates that it must have increased a lot now. After all, smallpox spreads very quickly. Moreover, the total number of deaths from smallpox is said to have exceeded 200,000 and is still increasing.

At present, the whole southern part of Western Europe is shrouded in panic, people are afraid to go out, they are hiding in their homes and shining. After all, in this era, the mortality rate of smallpox is as high as more than 30%, and even 45% is reached.

I am afraid that only the Beihai country, which is growing cowpox, can have a certain resistance to smallpox. In other areas, even if they are not infected with smallpox for the time being, they have already jumped into the chickens.

Fearing smallpox, the seafaring trade in Europe had ceased completely. England, in particular, has declared a closed country and strictly forbiddens any foreign ships from docking. Only ships from the North Sea Kingdom could approach the port of London. However, it is also necessary to apply in advance with carrier pigeons, and only after obtaining permission can it be docked.

Marin quietly sent 5 warships to take his future daughter-in-law, Princess Margaret, to Aurich for a few days, and then tricked her into a small fishing village in Harle, a cowpox planting base, and quietly planted cowpox. Afterwards, Princess Margaret had a fever, but was quickly suppressed by Chai Hu and Yinqiao. In other words, Princess Margaret will not be afraid of the threat of smallpox in the future.

……

Just when Marin was secretly promoting cowpox for his own people in the North Sea Country, a carrier pigeon suddenly flew from Rome, Italy, bringing a secret message from the Pope's father-in-law, Julius II.

When I opened the secret letter, I saw that a suggestion from my father-in-law was written in the letter......

Julius II himself had cowpox, in the small enclosed fishing village of Doromia, near the city of Rome, where Marin had escorted him ashore.

Accompanying the Pope to plant cowpox is also a group of followers who have been cultivated since childhood by the Rovere family. After being planted with cowpox, the Pope did not seem to believe in its effects. So, he sent a Chinese cowpox family dead soldier to the smallpox-plagued area outside Rome. As a result, I was fine for more than ten days after I came back. Obviously, the effect of cowpox is reliable.

Then our Pope will have nothing to fear. However, some ideas also came to life......

As a member of the highest clergy, Julius II did not attach much importance to profit. What he wanted more was to go down in history and become a great pope who would be respected by future generations.

And what could be more rewarding for a pope than overcoming the devilish plague of smallpox?

If he had come forward to spread the word for smallpox throughout Europe, wouldn't his reputation have exploded after his death? Perhaps, it can be mixed up with the name of the "greatest" pope......

Thinking of this, Julius II couldn't help but be very moved. Of course, he can't forget about his son-in-law. After all, this method against smallpox was indeed devised by his son-in-law. If Marin publicly "offers" the solution to smallpox and promotes it himself, he can also give Marin a reward while gaining enough fame. For example, rewarding a throne......

The throne of Europe is very rare, and ordinary people do not mix. Eastern European powers such as Lithuania have not been able to get mixed up with the name of the kingdom. However, the Holy See can give. Of course, the premise is that you have to make great deeds that will not last forever. In this way, the Pope will have a reason to crown you.

But this is not a problem for Marin, as long as the cowpox method is sacrificed, the terrible smallpox that has plagued Europeans for thousands of years is contained, and a throne is given, and other countries are not easy to oppose. Because, everyone is a beneficiary of this. If anyone dares to object, they will be sprayed to death......

After all, in this era, people still have clear grievances and attach more importance to morality. Marin City is the whole of Europe, and it is not too much to mix up a crown...... What's more, the whole of Europe is trembling in fear in the face of the smallpox epidemic right now......