"Release the boat~~"

On the first day of March, with shouts, one by one the pedal steamers were released into the water.

Two days earlier, the ship had been repainted with a new layer of tung oil.

The life-saving equipment was rigorously inspected, delivered to the ship, and began to sail the ship to various places.

A string of boats is tied to the back of the boat, and two or three are tied to the countercurrent.

The people who wanted to go back in Chang'an took the initiative to help for free, brought the goods on the ship, and helped a few more to return to the village.

The boatman waited and found that no one asked him to leave, so he relieved himself and continued to take the job.

The people who were carrying the bags on the road noticed that there were boats coming from the canal next to them, and they were standing there waiting.

When the boat arrived, I asked where I was going, and I stopped by the way, and hurried to the boat behind to help step on it.

Since the advent of water nets and boats, people who walk with things have apparently become lazy.

Carrying 50 pounds of things, carrying a 100-pound burden, and walking with your legs is definitely not as good as putting things on a boat and stepping on them.

It is also easier to walk against the current than walking on your own, and three or four people can step on it together, and you can also take turns to rest.

The children of wealthy families who did not have to work ran to the river to watch the boats.

At noon, the officials had eaten, ran out for a walk, and watched together.

Some of them are purely for the purpose of writing poems, watching the scene of a large number of ships departing, thinking of a good poem, isn't it hot weather, and they want to hold a poetry meeting.

The envoys of various countries in Honglu Temple want to see, see the prosperity of the Tang Dynasty, and ponder the way out for the development of their own country or tribe.

The pedal steamers on the river lined up and have not yet been released.

Ordinary people see bustle, but people with a little political acumen see economic prosperity.

The boat is not big, but it can solve the problem of people's transportation.

Every day, ships run around and there is a flow of goods.

The envoys in other places saw it and felt that the Tang Dynasty was indeed strong.

The Tibetan and Turkic envoys hated to sink all the ships, preferably a large crowd.

But they knew, impossible, how could the wooden ship sink? There are also 'life jackets' on the body.

Count on the small boat to fall apart, or not exist, unless it is hit with a big ship.

Datang has mortise and tenon technology, and even more powerful is the iron nail on the ship, which is used with mortise and tenon joint, which is very strong.

In the previous naval war with Japan, the Japanese ships could not hit the ships of the Datang, and they scattered as soon as they collided, and the Datang Navy won the war like that.

"There are few rivers in Tubo, otherwise...... What is that? Isimba, feeling sorry for his place where the river was not suitable for boats, suddenly pointed to a boat and shouted in surprise.

It was a pointed boat with a sharp front and a wide back, and there were also eight people on it.

The place of four people can be treaded, and now there are four people on the ship, the Feather Forest Flying Warriors.

There are handles next to them, and they grab the handles one by one and step on them hard.

The front of the ship was cocked on the water, and the steamer in the same direction as the ship seemed to stop there, and the ship jumped by.

There was a splash in the back of the boat, and the boat felt like it was flying against the water, and of course, it was a really fast boat they had never seen.

'Wow~~' The people watching from the shore were in an uproar, what a boat, it's too fast.

The old man knew that this was a propeller, and the calculated blade angle was used, as well as the new bearings and the crankshaft and half shaft.

This is the most advanced technology display of my Datang industry, this speed, beautiful, Xiaoyi has the ability. ”

Bi Gou told the people next to him that the technology of the Li family Zhuangzi is the technology of Datang.

Song Jing was convinced, at least he didn't know how to make it, and the speed of this ship was many times faster than that of other ships.

He stared at the boat: "In a water battle, the enemy's ships simply don't have time to turn around, and they are transporting supplies on the water, and other ships can't reach them. ”

On the shore on the other side, Li Yi held up the telescope and shook his head: "It's too slow, the four of them are flying together to do the work, and it is less than ten knots." ”

Li Yi disliked, it was too slow, the sailboats on the sea, when the wind was good, were full of sails, and the speed was faster than what he saw now.

Li Yi found that the speed of the boat was about eight knots, that is, thirteen or fourteen kilometers per hour.

If someone else steps on it, it would be nice to be able to maintain 10 kilometers per hour.

The main thing is that the entire set of drive equipment is already very heavy, not diesel and gasoline engines, and the hull is made of bamboo.

On the Yangtze River, when the wind and water are smooth, the speed advantage of the propeller boat cannot be reflected.

"Go back and add another gear set, I don't know if this steel can withstand it." Li Yi knew how to increase the speed of the propeller.

The speed is absolutely different from stepping on one lap and turning the propeller ten times, and stepping on one lap and turning the propeller thirty times.

As with the gears of the bicycle, put the largest in front and the smallest in the back, as long as you pedal vigorously and the chain can withstand it, the speed will be fast.

After a few more looks, Li Yi went back to redesign the drawings and sent them to the workshop.

What Li Yi is not very satisfied with is no different from a miracle in the eyes of others.

They don't think about the speed of the sailboat's current, they see the speed of the new ship against the current.

Isn't it okay to float with wood downstream? The key is to stand on the water and fly.

In a water war, which is also a long-range attack, the new ship can always have the upper hand.

"How can you grab a ship?" Bo Zhen remembered it, trying to figure out the principle.

The ship already knew about it, and it had stepped on it personally, the structure was simple, and it was difficult to think of it.

The boat I just saw, without oars, sails, or wheels, is splashing underwater, stepping on it like that, how can the water splash below? Why does the ship move forward?

A series of questions lingered in Bo's mind.

Isimba rubbed his face with his hands: "As long as they release it for others to use, we will rent one and move it ashore to see." ”

"This is not to be learned." Song Jing saw foreign envoys, especially those from Turks and Tibet, and he wanted to keep them secret.

"The old man believes that if he brings them back, they won't be able to make them, and the metal is not strong enough.

Something of the same shape can be cast by the method of inverted molding, and when combined together, it cannot be used.

Pedal twice, the gears are gone, and you'll know when you see the bike's chain in two days. ”

Bi Gou believes that this thing is not easy to imitate.

"You go and ask Li Yi, you can't ask someone to learn." Song Jing is still not at ease.

"The old man will go now." Bi Gou was helpless, so he took two people to the bridge and asked.

The other envoys had their own minds, and where there were rivers, such as Japan, they wanted to acquire the corresponding technology.

The fastest advance had arrived from Japan, and told the envoys that the brigade would soon arrive.

It is necessary to communicate and learn in Datang.

The Japanese envoys stationed in Datang sorted out the materials, and they drew and drew all the tools invented by Li Yi, as well as made real objects, waiting for an opportunity to send them back.

Envoys from other places did the same job, including the Khitan and Bohai Seas.

The Khitan additionally knew how to make another sled suitable for running in the mountains, Li Yijiao, and the relationship between the two sides was good.

Of course, no matter how good the relationship is, there is no key technology for hot air balloons.