"Okay, today's class is over. There are still a few minutes left. If you have any questions, you can ask them on the spot."
Xie Yan closed the lecture notes and the teaching assistant was packing up the experimental equipment.
Li Dunshi was very positive and quickly raised his hand and asked: "Sir, does the order in which molecular formulas are written contain any rules?"
Xie Yan shook his head: "There are no rules. Scholars decided at a meeting. The oxygen element is written at the end and the metal element is written at the front. After everyone agrees, it is easier to read, write and remember. If all chemists agree, this set of rules will also
It can be the other way around.”
"Oh." Li Dunshi sat down.
Another student asked: "Sir, how do atoms of different elements form molecules? What are the rules for changes in the number of atoms?"
"This still needs to be studied. Maybe you can solve the mystery." Of course Xie Yan knew, but he couldn't tell about electrons.
He didn't know how to create cathode rays, which would allow electrons to be discovered.
Of course I can't say anything about the chemical compound price.
Even the molecular formulas of many common compounds are still being studied by today's scholars because the number of atoms of each element is temporarily unclear.
After answering two more students' questions, Xie Yan left the classroom with the teaching assistant.
It's only mid-afternoon, so it's quite early.
Xie Yan returned to the East City Gate in a carriage. When he passed through the streets and alleys of Fuguo Dongcheng District, he found many people shouting and running towards the dock.
He asked the driver to stop and sent his entourage to inquire about the situation, only to learn that a fleet had returned from the United States and had brought some foreign envoys back to Beijing.
It is difficult for ordinary envoys from foreign countries to cause a sensation in Luoyang.
And these American envoys were said to be dressed up in all kinds of ways.
Xie Yan parked the carriage on the only way into the city, and soon saw a group of soldiers coming with Americans.
An American walking at the front had a two-layered hat, each with a long-nosed mask. Behind the hat were a large number of colorful feathers, similar to the crest of an Indian chief.
She is not naked, she is fully clothed, and she even has pants underneath her short leather skirt.
He holds a snake-shaped scepter in his hand and wears wooden-soled leather strap sandals on his feet.
…
While Xie Yan was observing these Americans, the American envoys were also looking around curiously.
At this time, the Mayan civilization was in a brief period of revival.
Internal decay, invasion from surrounding foreign enemies, and perhaps the influence of the Little Ice Age, led to the decline of the Mayan civilization during the Northern Song Dynasty. Many cities were burned and looted, and even turned into ghost towns in the jungle.
For example, the famous Mayan city-state "Chichen Itza" was destroyed by the Toltec civilization, and the newly built temple was dedicated to Quetzalcoatl.
Thirty years ago, the enslaved Mayans launched an uprising to recapture Chichen Itza, which was occupied by foreigners.
It's a bit like King Wu's defeat of Zhou.
The city-state that led the uprising was called "Mayapan", and its leader was elected as the king of all Mayans.
The declining Toltec civilization not only faced Mayan uprisings, but was also invaded by northern barbarians.
The Chichimecs, who came from the U.S.-Mexico border, killed the Toltec city-state alliance and replaced them, similar to the Manchus entering the country. They have accepted the advanced culture of the Mexican region and quickly transformed from a fishing and hunting nation into a farming nation.
Soon, they will be invaded by another barbarian tribe - the Aztecs!
Manco Capac, the founder of the Inca Empire, also led his tribe to migrate to Cusco ten years ago. They would use Cusco as their capital and establish the famous Inca Empire.
Coco Kaba held a snake-shaped scepter in his hand and looked at everything around him curiously.
He arrived in Luoyang all the way and was already past the shock stage.
In other words, I was shocked to the point of being almost numb.
Coco Kaba comes from the Mayan royal family (Coco family) at this time. He is the nephew of the current Mayan king (second generation) and a relatively young priest.
The snake-shaped scepter in his hand is not Quetzalcoatl, but the Mayan "phantom snake".
Through the bloodletting ceremony, the Mayan priests may have lost consciousness due to excessive blood loss, or they may have taken some kind of hallucinogenic food. Anyway, they can use the "phantom snake" to communicate with the gods or ancestors across multiple layers of time and space in the universe.
As early as four years ago, when the Ming Dynasty's circumnavigating fleet was looking for rubber on the east coast of Central America, it had already come into contact with the Mayans of the Yucatan Peninsula - the current core of Mayan civilization's rule is in the Yucatan Peninsula.
Coco Kaba still clearly remembers the scene when he first met these Akito.
The other party wore strange clothes and held swords and sticks in his hands, and came to the city of Mayapan to meet the king. They gave the Mayans many gifts and asked the Mayans to take in the two sick people.
One of the patients died, and the other patient stayed there for two years, insisting on going west to find his compatriots.
Since the Toltec city-state alliance was overthrown, the Mayans gradually resumed trade with the western and northern city-states. A Maya trade team set off with the surviving Akito and traveled for more than two months. They actually found out
The tribe of Akito.
It was originally a Mayan seaside city-state, but it was burned and looted by aliens two hundred years ago. The Mayans either escaped or were taken into slavery.
The whole city became deserted.
Hundreds of Ming Dynasty death row prisoners were exiled there. Finding this land fertile (volcanic ash), they chose to settle down and form villages, and also intermarried with two Mayan tribes dozens of miles away.
Those two Mayan tribes have been enslaved by the Toltecs and must regularly offer food and human sacrifices.
The Ming people not only married them, but also taught them how to smelt iron and make iron farm tools and weapons.
Decades ago, the Toltecs fought simultaneously with the Chichimecs in the north and the Mayans in the east. Their dominance on the west coast declined rapidly, and Ming and the two Mayan tribes took the opportunity to rebel.
Two Mayan tribes in an Mingren village actually established an alliance.
And through trade and war, the membership of this alliance has increased to seven tribes.
It is still expanding because you can make your own iron tools!
A few months ago, the surviving Akito patient came to Mayapan City with many of his compatriots.
He claimed to be the envoy of the Ming Emperor and invited the Mayan envoys to visit the Ming Dynasty.
In Coco Kaba's understanding, the Ming Dynasty should be an alliance of city-states, and the Emperor of the Ming Dynasty should be the king elected by those city-states.
The envoys of the Ming Dynasty brought many gifts. King Maya was very happy about this and even asked his nephew to lead a team to visit the Ming Dynasty.
The envoy of the Ming Dynasty said: "Dear King Maya, the Ming Dynasty is very far from Mayapan, and it takes a full year to get back and forth. I hope you can wait patiently."
Check out the correct version one by one!
King Maya said: "Your king is very sincere and brings me rich gifts. I also prepared the best gift and asked my nephew to bring it to express my gratitude. I can wait for a year or two."
In this way, Coco Kaba followed the Ming people, traveled through mountains, rivers and jungles to the west coast, and boarded an incredible giant ship.
They were at sea for three months.
Coco Kaba came to a place called Luzon and landed in a huge seaside city. He thought he had arrived at the city-state, the leader of the Ming Alliance, but his companions told him that this was just a small city under the rule of the Ming Emperor.
Soon, they came to Fucheng in Taiwan, but it turned out that this was just a small city.
Then there was a huge city called Quanzhou. Before Coco Kaba even got off the ship, he was kneeling on the deck to pray. He thought he had arrived at the residence of Komu Kamenpus, the king of the gods.
But then one giant city after another appeared in front of him.
The initial shock gradually turned into a habit, and a deep sense of awe filled my heart.
"This is the Sifang Pavilion. You can stay in here first and wait for His Majesty the Emperor's summons." The surviving patient was acting as a translator at this moment, conveying a message to the Americans.
There are also people who do not need translation, such as Xue Shan.
Xue Shan belongs to the second generation of native Americans. His father was a death row prisoner and was exiled to the west coast of Central America decades ago. Because of his ability in writing and calculation, his father became one of the leaders in the village.
Xue Shan's mother is a Mayan woman.
Xue Shan is literate and can speak Chinese.
However, his father's Chinese has a strong Shandong accent. Living in Central America for decades has caused the accent to change even more, and occasionally some Mayan words are mixed in.
When Xue Shan came to Luoyang, he could only guess that he could understand it.
"Xue, is this the city-state of your ancestors?" Coco Kaba asked in Mayan.
Xue Shan replied: "It's my first time here too."
Xue Shan was very proud, but at the same time a little inferior.
He has heard from his father and many village elders since he was a child that there is the greatest country in the far west, on the other side of the sea. The cities there are much larger than the Mayan cities. There are countless grains and clothing.
Endless clothes.
In this regard, Xue Shan could only rely on fantasy.
Only when he actually returned to his ancestral country did he realize how ridiculous his fantasy was.
…
"Really brought back rubber?" Queen Mother Ye was slightly excited.
Others don't know what rubber is used for, but she does. Because the secrets left by Emperor Taizong have made it very clear that the outer layer of BMW wheels is made of rubber.
Zeng Jiuyou said: "Rubber is a kind of sap, just like rosin, it will solidify quickly when exposed to air. This time I brought back 200 rubber saplings, many rubber seeds, and some solidified rubber saplings.
Dozens of them died on the ship. I was afraid of the long nights and dreams, so I planted all the living ones in Luzon."
Queen Mother Ye quickly got a rubber ball, which was soft and looked nothing like a BMW tire.
She returned to the harem and took out Taizu Taizong's secret book. After carefully reviewing it, she found that the rubber needed to be vulcanized.
But how to vulcanize it?
Queen Mother Ye summoned the old president: "Rubber needs to be vulcanized, and a group of chemists must be summoned."
The old president said: "Gather five people together and give it a try."
Queen Mother Ye said: "Although Prince Consort Xie is young, he is a top scholar in chemistry. Please call Prince Consort Xie as well."
The old president asked: "Should we let them see the sacred car?"
Queen Mother Ye shook her head: "No need for the time being."