Otaku Engineer in Great Tang Dynasty

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"As for the question of whether it is worthwhile to equip every merchant ship with a compass, I think it is very worthwhile."

In the main hall of Li Mansion, Wang Renbiao picked up the tea cup, took two sips of tea and continued:

"The number of ships going south this time is conservatively estimated to be in the thousands. Once there is a big storm at sea, many ships will definitely leave the main fleet. At this time, a compass can increase the survival of lost merchant ships by 20 to 30%. Probability, if this probability can be superimposed, I would be more than happy to equip each ship with a few more compasses. Because a compass is only five dollars, and the value of a merchant ship and its crew is far greater than this amount of money!"

Li Zexuan smiled when he heard the words and said, "Haha, not bad, I didn't expect Ren Biao to see the problem so thoroughly!"

Then he thought about it and said, "As for the fifty compasses that Ren Biao asked for, I will let the people in the workshop deliver them to you in two days, but I also need Ren Biao's help."

"Speak, sir!"

Wang Renbiao said quickly.

"The Wang family's fleet is heading south this time. I want to ask you to help me bring something. I think it's rubber."

"What is rubber?"

Wang Renbiao wondered, he was quite knowledgeable, but he had never heard of rubber.

Li Zexuan considered the language and described:

"It is the sap produced by a tree. After you arrive in the countries of Nanyang, you can send people to search for the rubber tree. The rubber tree is an evergreen tree with a tap root system, three compound leaves, leathery entire margins, and panicles. The fruit is a capsule. , The seeds are oval in shape and have a milky sap. This sap is rubber. Usually, you only need to make a slit in the bark, and then put a jar under the slit, and a lot of rubber will be collected."

Wang Renbiao and Leng Yuyao's eyes widened when they heard the words. It was the first time they heard of this magical tree. Why did it sound like a fantasy tree?

"There is such a tree in the world? It's amazing!"

Wang Renbiao was stunned for a while, and finally sighed.

Li Zexuan smiled and said: "Well, this rubber tree is indeed somewhat magical. It has another name, that is, the tree of tears. When you cut its bark with a knife, a lot of white sap will flow out, and it looks like It hurts like tears!"

Li Zexuan said this is not nonsense. The word rubber tree originally comes from the Indian language cau-uchu, which means "tree that weeps".

Wang Renbiao exclaimed: "It's interesting, it's really interesting! Hearing what the lord said, if it wasn't for my family, I would like to go down south and have a look myself."

Leng Yuyao couldn't help frowning and said: "It's a good rubber tree, why do you have to cut its bark? You are so cruel!"

Li Zexuan rolled his eyes, eldest sister, you carry your sword every day, and if you see someone who is not pleasing to the eye, you will kill them. Do you still have the face to call others cruel?

Leng Yuyao instantly understood the expression on Li Zexuan's face, her face flushed, and she quickly looked away without saying a word, just like what she said just now.

"I need this kind of rubber very much. I will bring back as much as you find this time. I will take it all. You can rest assured that the price will satisfy you! It is best to bring back some rubber seeds, but be careful. , its seeds and leaves are poisonous, don't let people eat them by mistake!"

Li Zexuan saw that this cold-faced little girl was still quite interesting, so he didn't know her in general anymore, he turned his head and said to Wang Renbiao.

There are many industrial products that are inseparable from rubber, and Li Zexuan really wants this stuff. Although rubber was originally produced in the Amazon rainforest in Brazil, it has not been introduced to Asia at this time, but the climate in Southeast Asia is very hot, with sufficient sunlight and rain, and it has the general climatic conditions of the Amazon rainforest. It is difficult to guarantee that there are no wild and primitive rubber trees. If you find it, you will earn it. Especially in Malaysia, this place is a famous rubber kingdom in modern times. The annual output of rubber is the first in the world. Maybe you can find it.

At this time, people must have not realized the value of rubber. The first to use rubber can be regarded as the oldest resident Indians in the Americas.

In 1493, Columbus made his second voyage to the American island of Haiti. He saw the happy game of the Indians: they formed a circle and sang songs and threw a round ball happily in rhythm. The ball hit the ground and bounced high. Columbus was greatly surprised. After inquiring carefully, he realized that the ball was made of something he never knew - rubber.

Later, when Columbus returned from America, he brought the rubber back to Europe by the way. However, no one in Europe at the time knew that this wonderful thing could be used in addition to making games. So it was sent to a museum, displayed in a showcase, for viewing as "a novelty brought back by Columbus".

It was not until 1770 that the British chemist and discoverer of oxygen, Priestley, discovered that rubber could erase pencil writing, and rubber was officially used.

Well, about the eraser, there is actually a stalk. Now the English rubber of rubber is also used to describe the eraser, but it is interesting that the American people are used to calling the eraser by the eraser, but the rubber is used to describe the condom... .........

inside the house.

Wang Renbiao thought about it for a while before saying, "Since the lord needs it, I will instruct the people below to go all out to find this so-called rubber tree. In addition, I will also ask the clan

In the middle of the application, 20 additional merchant ships will be dispatched to specially load rubber for the Lord. How about the price of 400 tons of rubber for one ship? Of course, if there is not enough rubber, we will also bring some goods back from there by the way. But in this way, the lord will sell us twenty more compasses! "

Li Zexuan was happy, Wang Renbiao was opening a back door for himself! Because if you pull a boat of silk and porcelain, transport it to Nanyang, and exchange some spice and grain back, the profit you will get is definitely more than 400 tons, and a conservative estimate is at least 2,000 or 3,000 tons. This is not an exaggeration.

"Haha, the compass is not a problem. The compass that the Wang family needs this time will be given priority by our workshop and will be provided free of charge, please rest assured! If your family's fleet can really find rubber trees in Nanyang, then this time I will be owed by Li Zexuan. Your royal family is a favor!"

Li Zexuan reciprocated Li Dao, he was always respected by others by one foot, and he respected others by ten feet.

Wang Renbiao was taken aback, and his attention to this matter increased in an instant. He quickly cupped his hands and said, "Don't worry, Sir, as long as there are rubber trees in the Nanyang countries, our Wang family's fleet will definitely be able to find it this time!"

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