Chapter 723 Tropical Fruit

  Fresh water is the most important material when sailing on the sea. However, it is not easy to preserve. After a few days, the taste of water will not taste fresh. Drinking it after it stinks may cause illness.

  In addition, long-term non-eating of fresh vegetables can cause other problems. Early seamen used oak barrels to prepare a lot of wine. This is not only a pleasure, but also a substitute for fresh water.

This discovery was not known to the world until the 15th century. Before that, sailing was very dangerous. Even if the crew did not die from pirates and unpredictable weather, they would die from sepsis. Becoming a sailor was a helpless choice. .

  Arrival at the port not only means getting supplies, but also means safety. The key is to get the nourishment of "love".

  Those sailors who come ashore will usually "hunt for beauty" in the tavern. As for the top, whether it is a wealthy businessman or the navy, they will be invited to the dance.

This is often the case in port cities. There are opera houses where the nobles can socialize, and there are also taverns where the "inferior people" can socialize. However, no matter how their worlds are separated, there will always be some overlapping places, such as the Flower God Cafe, and A place like the post office.

  Italian cuttlefish noodles are very famous. Pomona has long wanted to eat that dark dish, but Monica and Ali Sandro didn't let her order it in Fabio’s restaurant.

  AnticaTrattoriaPosteVecie restaurant was remodeled from the Venice Post Office. Locals don’t come here much, mainly tourists.

Everyone knows that things in tourist attractions will inevitably be a bit more expensive. Fortunately, this shop is more realistic, and the seafood is very fresh, but Pomona is not here just for eating. This restaurant has a history of five hundred years. This has been the case since the Middle Ages, and the surrounding hotels have been around for hundreds of years. It reminds Pomona of the Broken Cauldron Bar.

A good private tour guide must understand the preferences of guests. Some like shopping, some like Renaissance trips, and some like romance. Pomona has never encountered this adventure mode Monica herself. She thinks it is novel and fun, but playing Going to play, money is the same to be earned, how can Pomona's money be so good? She taught Monica and Ali Sandro to play a game, how to encrypt a message.

Caesar encryption is the first well-known cipher. It was the Caesar cipher used by Caesar the Great in about 58 BC. In his military order, Caesar shifted every letter to prevent his enemies from intercepting Caesar’s After the military order, he directly obtained his true information.

Caesar encryption is the simplest encryption method. Both parties of encryption must first reach a consensus on the displacement number of letters. For example, if the number of encrypted displacement agreed by both parties is 3, then each letter sent must undergo 3 displacements, and A becomes It becomes D, B becomes E, and C becomes. Assuming the plaintext is "attack", it will become "dwwtfn" after being encrypted by Caesar with a displacement of 3. Then send the encrypted text to the recipient through the sender, so that even if the enemy catches the sender, they will get a bunch of unintelligible texts, and the generals who successfully get the ciphertext will pass the secret. By subtracting 3 from each letter of the text, you can get the real plaintext information, and this process is called decryption.

  This encryption method was used by the West for hundreds of years, until an Arab deciphered it. Any text in an English book, and then calculate the frequency used for each letter, you will find an amazing secret, that is, in the English text, the most frequently used letter is always e, which is determined by the nature of the English text. The person who writes the cipher text does not realize that in cryptography, this is called a fingerprint.

   Around the 15th century, someone proposed a multi-table cipher to achieve this goal. The difference between a multi-table cipher and the Caesar cipher is that it does not use a single number for displacement encryption, but instead quotes a displacement word. The first step of this encryption method is to determine the displacement word, assuming it is "world", and then convert this word into a number according to the position of the word in the alphabet. The character of "world" corresponds to "21, 15, 18, 12, 4", and then repeat this column number in the process of information encoding, and shift the plaintext information according to this number column. Suppose the plaintext is "abcdefghij" and the encrypted ciphertext is "vrvqjbwavo". When the ciphertext is sent to the partner, the partner can decrypt the information according to the pre-appointed secret word and subtract the corresponding displacement. If the ciphertext is intercepted and the eavesdropper calculates the frequency of letter usage, he will find a flatter distribution, and the "fingerprint" will be difficult to find.

The word used for encryption is the key. After knowing the key, the ciphertext will be decoded quickly, but if you don’t know it, you can’t decipher it. The premise is that the person must be very smart, and he must settle down and spend time on research. Now Monnie Card and Alan Sandro are encrypting according to the key given by Pomona.

  A woman is like an encrypted book. People who have the key can read it quickly, and those who don’t know the key can’t read it. If you just give up, then he has nothing to do with the knowledge of secrets.

This restaurant is located diagonally across from the Frangetti Art Museum. There is a magical alarm clock near the art gallery. Legend has it that this old alarm clock belongs to a black magic witch who lives nearby and enjoys marking the expiration time of bills with a clock. The house she lived in when the witch died had been closed for many years, and no one wanted to live there.

Many years later, people began to joke about witches and alarm clocks, so the original alarm clock was also removed, but after removal, some disturbing phenomena began to appear noises, abnormal noises, and inexplicably disappearing items, so the alarm clock returned To the original place.

Human beings have curiosity and fear about unknown things. When curiosity overcomes fear, it is the driving force for human progress. When fear overcomes curiosity, they will shrink back. People often feel afraid of change in middle age, because then People do not have the time and energy to make mistakes as they did when they were young.

  The post of Governor of Venice was first established in 726 to replace the previous guardian. The earliest governor was a representative of the Byzantine Empire, as well as a church and military leader. After Venice gradually developed in the direction of an oligarchy, some key functions of the governor were gradually replaced by other officials and the Venice Council, and the governor became a representative position.

  The powers of the governor are not particularly limited, and are mostly held by members of several large families. Several early governors allowed their sons to hold public office when they were in power, which led to this position tending towards hereditary monarchy. Later, the Republic stipulates that the governor shall not nominate his successor.

  After 1172, the governor's right to vote was handed over to a committee of forty members elected by the Grand Council of Venice. In the 1268 election, new regulations were made to minimize the influence of individual families in the election. Nine people were selected by the Great Council by lottery. These nine people selected 41 people who really have the right to vote through multiple complicated lottery and election steps. Each step requires up to three-quarters and at least half of the minimum support rate. It can be passed.

  At the same time, there are new regulations, for example, when he opens a foreign letter, other officials must be present. The governor is also not allowed to own land in a foreign country. After a governor dies, his political achievements will be evaluated, and if there is any malfeasance, the parliament will confiscate his estate.

This was mainly due to the influence of the pope’s election and the Crusades. For a long time, these interest-oriented activists did not take God seriously. The Crusades showed them the terrible power of faith, in order to avoid Venice again. Becoming a puppet of the emperor and the church, the opening of the letter will continue to be watched.

  In ancient China, there were post stations. This kind of information transmission was transmitted to Persia by envoys, mainly used to transmit military intelligence. Later, it was heard that Litchi was transmitted to Concubine Yang.

  The earliest international post in Europe in the Middle Ages was organized by the Chamber of Commerce for their members. The first, and perhaps the first international post, was the Metzger Post formed by the German Meat Guild in the 12th century. At that time, an additional condition for opening a butcher shop was to have a horse and undertake the work of carrying mail.

  Metzger Post operated until the end of the 16th century, when it was annexed by the Holy Roman Empire Post. In 1301, the Florentine Cloth Shop Merchants' Guild established the Post to operate the postal business from Florence to the major trade fairs in France. The members of the guild paid their postal staff a contribution.

  Monastery Post was established at the beginning of the 12th century. It handles postal services between the various monasteries and their general management offices affiliated to the Italian and French Archbishops. The monastery messenger is called the "messenger", named for delivering parchment letter scrolls. These volumes are composed of letters. From one monastery to another, more and more pieces of parchment are stitched together end to end. It takes several months to carry such a letter for a week, and the letter scroll may already be a giant when it reaches the end of the journey.

At the beginning of the 13th century, a postal service was established between universities. Students were divided into several "country" groups, and each "country" group had messengers to maintain regular communication with the students' home country and hometown. For example, the predecessor of the University of Paris, Paris Sol The British group of this seminary has sent messengers to London, Oxford, Dublin, Glasgow, Edinburgh, Aberdeen, Bergen, Uppsala, Krakow, Hungary, Bohemia, Moravia, The princely territories of Pomerania, Silesia, and Germany. University Post is different from other early postal systems in that they allow the delivery of private letters from the general public. The income from these post offices is used to pay the salaries of teaching staff. Universities in Central Europe The postal service lasted until the 18th century.

  Military intelligence is, of course, accurate, fast, and encrypted. It is ideal to provide an express post of 800 miles, but maintaining such a huge postal system requires huge expenditure.

Later, these post stations also served part-time officials to exchange and receive envoys. It was unrealistic to rely solely on state funding. There were also postal problems during the Arab Empire. Pigeons were not always insured. In order to transmit information in a safe, reasonable and concealed manner, humans can be said to be twisted. Do your best.

  Pomona dare not enjoy the food slowly when someone is chasing, but they really need a place to sit and write.

  Pomona, another information distribution center in Venice, has no plans to go. Women may not be confused by love, but they will still be confused by money, just as the elders no longer obsessed with women, but still obsessed with power.

  This encrypted letter, the boss will not know what it is written, he is like a "footman" who knows nothing, but is responsible for the transmission of the letter.

  Poor Harry Potter.

   "Did you complete it?" Pomona urged them both to hand in papers like an exam teacher.

   "It's ready soon!" Monica and Ali Sandro said anxiously.

  Pomona shrugged, called the waiter, and ordered three Antica coconut-flavored ice creams.

  A good boy should be rewarded. Before Gabriel Truman defeated Prefect Ravenclaw, she gave him a coconut ice cream to eat. What should I do? She just likes the taste and can't stop it.

  (End of this chapter)