Everyone in this world has their own talents, some are good at business, some are good at inventing, some are well-informed since childhood, and it is not a problem to gain fame, and some are good at stealing since childhood. 'Whether it's good or bad, in short, people have what they are good at when they live.

And now, Xu Yang thinks that Yuan Tiangang is good at learning chemistry, this guy is simply a natural chemist, the textbook of "Elementary School Chemistry" has given him less than a few days, this guy has already distinguished the oxygen and nitrogen in the air, when the old Comrade Yuan rushed into the house of Xu Yang's fiefdom with a glass bottle, Xu Yang almost didn't recognize him.

The dirty Taoist robe, which was still rubbed with a lot of charcoal ash, did not have a sanctimonious ancient well without waves on his face, and some were all happy, like a child who had just gotten a toy.

"The old man is happy!" This was the first sentence of Lao Yuan when he entered the house, and he even threw away the self-proclaimed poverty road.

Xu Yang hurriedly ordered someone to change Lao Dao's clean clothes, make tea, and sit at the guests, before he was ready to talk to Lao Yuan in detail about what was going on.

Lao Yuan was also a little thirsty, drank a cup of tea in one go, and took the four martial artists over a mountain to the Xuyang fiefdom, which was still a little out of breath when he could speak.

"You speak slowly, don't be in a hurry." Xu Yang sat on the chair and said slowly.

Yuan Tiangang touched the glassware in his arms, and said with joy in his tone: "The old man has studied Taoism for forty years, since reading your chemistry book, I deeply agree, everything in this book has exhalation, and the main inhalation is oxygen, the old man thought for a long time, this air is colorless and odorless, why does the book say that it is a mixture of three gases?" Oxygen, carbon dioxide, and most nitrogen. ”

"Ahem." Xu Yang was almost choked by the water, but he didn't expect Lao Yuan to get started so quickly, starting with oxygen and chemistry, and sure enough, there is a striking similarity with the development of history.

"The old man couldn't sleep at night, spent hundreds of dollars, bought a lot of glasses, sealed them, imagined that the bottle stored three kinds of heaven and earth gas, one day, when the old man looked at the book "High School Chemistry", he found that combustion and breathing consume oxygen, which made the old man think of a good idea, the old man ordered someone to put a mouse in a large glass bottle, and put enough food for the mouse to eat and drink for three days, and then sealed the bottle, put it at the head of the bed, and observed it day and night, and found that the mouse was suffocated to death in less than half a day."

Xu Yang was a little dumbfounded, why is this so similar to the scene of his junior high school students?

Yuan Tiangang obviously didn't care about Xu Yang's expression, and was still gushing: "According to the book "High School Chemistry", this mouse is also a living being, and the living creature needs oxygen to breathe, and the oxygen in this bottle dies, and this mouse is naturally lifeless, but how to prove that combustion also consumes oxygen?" The old man then sealed the bottle, put the mouse in, and put a burning carbon rod with it, and after sealing it together, the mouse died in less than half an hour, so the old man knew that the oxygen in the bottle was all consumed, and he brought it! With that, he triumphantly pulled the glass bottle out of his bosom, and there was a dead mouse in it.

Xu Yang's eyes were about to pop out, and this Nima control variable method was all out, and he said to Yuan Tiangang after a while: "Indeed, as the Taoist chief said, the oxygen in this bottle has been consumed, and now most of the nitrogen and carbon dioxide in this bottle are there, and there are some other small amounts of rare gases. ”

When Yuan Tiangang heard this, he nodded with satisfaction, looked at the glass bottle in his hand with an appreciative expression, and didn't care about the dead mouse at all.

"Dao Chief, since you are studying this air now, then the kid will say a little, this nitrogen, oxygen, and carbon dioxide are the three main gases, but they can have different characteristics in different environments, especially carbon dioxide, this thing can be turned into the form of ice when it is pressurized and cooled, commonly known as dry ice, put it into the room temperature air, this thing can emit a cloud effect, it looks beautiful, like a fairyland on earth, Dao Chang can go back and give it a try."

When Yuan Tiangang heard this, he was really moved, and now he was convinced of what Xu Yang said, after all, he had seen the wonder of the 'Xuanji Mirror', and now he just wanted to go to the peak of chemistry on the way.

Yuan Tiangang left, and when he left, he went to see the two little Taoist children who stayed in Liujiazhuang, Daowen and Dao Nian are now familiar with Xujiazhuang, and when they saw the master, they thought they would call themselves back, and reluctantly pulled Liu Mengli's clothes, Yuan Tiangang laughed three times, and said a word for them to have a good understanding in the land of Guigu and then threw off his robe and left.

This Taoist nobleman just walked on the front foot, and then came to the distinguished guests, Niu Jinda visited the convoy before and after a total of more than a dozen, all of them were green shirt readers, and now Niu Jinda is a blood capital for the voyage, not only to read the "Navigation Minutes" himself, but also to mobilize the entire Niu family to set up a navigation research institute, which was personally approved by His Majesty, after all, Li Er is also very yearning for overseas, Lao Niu's work from the dragon is enough to take on this great responsibility, no one will gossip.

After Lao Niu established this Navigation Research Institute, he absorbed a lot of officials and shipwrights from the seaside, and from their mouths they also had a clear understanding of the difficulties of navigation and the risks at sea.

Bringing Niu Jinda respectfully into Zhuangzi, Lao Niu saw Han Yanxuan, who was dressed as a dark blue man, and his face was a little solemn, and he whispered in Xu Yang's ear: "Boy, who is this?" Why did you arrange it to you without asking? This kid's bones are amazing, there is no one in ten thousand, he is definitely a first-class master, you are so foolish, and you are not afraid of losing your life one night? ”

Xu Yang listened to Lao Niu's introduction, his mind was moved, and he carefully looked at Han Yanxuan up and down, just a little stronger than himself, a little taller, how could Lao Niu see that he was a master? But the performance work still has to be done well, and he grinned at Lao Niu and said: "This is my fellow disciple in Guigu, Han Yanxuan, Ziyun Nie." After that, he also beckoned to Han Yanxuan.

Han Yanxuan was relatively indifferent, he didn't seem to care about anything, he just clenched his hands and moved his fists, this is the highest etiquette Xu Yang has ever seen him do, Lao Niu heard that this guy who was a deep blue man customer service was Xu Yang's fellow disciple from Guigu, and he immediately closed his mouth in surprise, and said half-loudly: "Guigu is really a strange person, and the sword on the back of this little brother is not ordinary, it has no dazzling silver light in the sun, and it must also be cast by divine iron." ”

Han Yanxuan rarely spoke, and when he heard this, he also raised his eyes to look at Niu Jinda, and said lightly: "The 'Imperial Dragon' cast by the meteorite iron outside the sky is praised. ”

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