The wind was strong and the rain was pouring down. Although it was daytime, the sky was dark, just like dusk. The rain outside the room continued to sound, and waves of phoenix turned into invisible hands, constantly pounding the closed doors and windows, making a "bang bang bang" sound.

There was a heavy storm outside, and the room was also very moving. Outside, Yang Lihua, who was ready, came to the door and heard a "creaking" sound inside. She was stunned at first, then walked to the side calmly and sat on the couch.

Someone went to the lineup and didn't know who it was yet. Yang Lihua didn't mind at all because she was over the age of jealousy.

After accompanying Yuwen Wen for twenty years, she now has no capital to compare beauty with the young "backward" of her beauty. Instead of being able to force herself, it is better to let it go.

Yang Lihua knew that Yuwen Wen was energetic and would ask her for later, so she wouldn't think too much.

The "fighting fiercely" inside was almost at the critical moment. Yang Lihua was afraid that Yuwen Wen would be distracted by going in now, so she could only wait outside.

Seeing the imperial concubine waiting, the maid quickly brought tea. While drinking tea, Yang Lihua looked at the heavy rain outside the window, and her mind quickly flew to Mingzhou thousands of miles away, thinking about how her younger brother was doing now.

It is now autumn. Yang Lihua takes off with Yuwen Wen back to Chang'an. A few days ago, after a storm hits, the emperor stays in the city until now. Her younger brother Yang Guang has already gone to Kuaiji, Mingzhou with the mission, and waits for the hyacinth to rise, so he goes out to Hainan and heads south to the Western India.

There are many storms in the coastal areas during summer and autumn, and Yang Lihua is very clear about this. She was wondering when the rain in Mingzhou would pass by the sun, and then her younger brother could arrive in India safely.

When the Persian mission came to visit, the dynasty sent an mission to Persia with him. He set off in autumn and time was a little hurry. Thanks to the developed industry and commerce in Yangzhou, the mission quickly prepared gifts, and the Nanyang Trading Company's fleet was also ready.

The delegation crossed the river from Guangling to Jingkou, Nan'an, and then went to Mingzhou by land. Yang Lihua heard from Yuwen Wen that the brigade of troops now live comfortably in Mingzhou Port, and when the time is right, he set sail.

When Yang Lihua thought of the sea, she felt frightened. When she was in Guangling, Yuwen Wen took her family to sea on a boat and walked around the sea. Yang Lihua looked at the bottomless sea on the boat, and always felt something inside staring at her.

Besides, the sea was bumpy, and Yang Lihua, who had never been seasick, couldn't stand it. It took a few days after returning to the shore, so now she was worried about her younger brother going out to sea.

But worrying is useless. She can do nothing except burning incense and worshiping Buddha every day and praying for Buddha's blessing.

While she was distracted, Yang Lihua suddenly saw someone else in front of her. When she looked closely, it was Yuwen Wen who came out of the room.

He was dressed upright and held a knife in his hand.

The blade of the knife emitted a cold light, which made Yang Lihua's eyes blurred. Then her heart hopped suddenly, and her head turned blank: What, what's going on?

"You are late to feed me." Yuwen Wen said lightly, Yang Lihua nodded in a bare state, and then saw clearly the scene in the room behind Yuwen Wen.

Everything in the room was as usual, the bedding on the couch was neatly folded, without any messy appearance of "after the war". On the table in front of the couch was a sailing model, and some materials and tools.

Yuwen Wen handed the knife to the maid and then complained: "My model is almost done, how about you, are you in a daze outside?"

"I'm rude..."

Yang Lihua quickly apologized and felt embarrassed for her mistake in judgment. She walked into the room and looked at the model of the sailing ship. She was a little surprised: "This ship... looks so weird."

Yuwen Wen looked at his masterpiece and touched his beard under his jaw: "Is it weird? It looks very good!"

"Uh... the hull is so long, the mast is so... one, two, three... five masts, if they are really made, can they go to sea?"

"Can you go out to sea? Hum?" Yu Wenwen heard this and his tone was a little higher: "I tell you, there are already more than a dozen ships in this ship..."

Yu Wenwen, who was a little excited, heard that his efforts were questioned, instantly forgot what to do next and began to conduct 'popular science': "Do you know that this type of ship is very advanced..."

Promoting maritime trade is inevitable inseparable from the development of navigation technology, and the performance of sea ships is crucial.

For Yuwen Wen, there are several popular ship types for voyages. In addition to the three-layer gun deck and nearly 100 artillery battleships, the most popular of the famous fly-scissors.

In its original history, the fly-slippers were sailing ships that appeared in the 19th century. This kind of sailing ship sailed very fast and it was said that it took more than ten days to cross the Atlantic Ocean. The main type of ships that were maritime trade, opium smuggling and tea sales in the Pacific Ocean were also fly-slippers.

High speed can shorten transportation time and avoid storms. The scientific sail type can save a lot of manpower when used, which reduces labor, so fly-scissors are a powerful tool for maritime trade.

Of course Yu Wen Wen wants this kind of maritime trade weapon, the problem is that he does not understand the structure of the fly-scissors.

I only know that the hull of this kind of ship is narrow and long, with "streamlined", low freeboard (low center of gravity), pointed bottom, sharp bows that can split the waves, and then there are multiple masts. As for the sails on the masts, they are mainly horizontal or vertical sails, I don't know at all.

He was unable to "invent" the flying scissors directly, so he could only invest a lot of manpower and material resources, which made people constantly explore. After more than ten years, he finally found a decent ship shape and a feasible set of shipbuilding techniques.

Yuwen Wen didn't know if this type of ship was a real fly-scissor, but the ship built was indeed very fast when it was sailing for trial sailing.

The average downwind speed during the experiment was twelve nautical miles per hour (one nautical mile is equal to three and a half miles on land). Later, after improvement and improvement, the improved ship type was stable at the average downwind speed at fifteen nautical miles.

You should know that ordinary sea ships can sail at a maximum of ten nautical miles per hour when they are downwind.

When Yang Lihua heard this, she finally knew where the ship was powerful, but she looked at the long hull and was a little worried: "Will such a long hull be easily disconnected from the middle?"

"Yes, with the current shipbuilding technology, after building such a narrow and long ship, it will easily break when it enters the sea, so it is not enough to rely on wooden keels alone, so it is necessary to use iron keels."

Yuwen Wen became more and more excited as he spoke: "The main sail style is a sail, which can sail against the wind. The material of the sail is soft sail, not as heavy as a hard sail. The model of the sailboat you see is a five-masted sailboat. When it becomes popular in the future, it will be the main clutch of the Maritime Bureau!"

Yang Lihua didn't know about navigation technology and didn't care. Yuwen Wen said so much that she basically couldn't understand it, but she noticed a sentence: "Popularity in the future?"

"Yes, this new ship model is different from the traditional ship model. It takes time to train all kinds of craftsmen and sailors, and it is not urgent."

Yuwen Wen picked up the model of the ship, his eyes seemed to shine. He asked Yang Lihua mysteriously: "This kind of ship has been manufactured in small batches. Now there are more than ten ships sailing on the sea. Zhang Yu's ship is this kind of ship... Do you know what the nickname of this ship is?"

Yang Lihua didn't know what nickname the ship had. She shook her head: "I can't guess..."

"Haha, you definitely can't guess."
Chapter completed!