The next morning, the door of the guest house was suddenly knocked gently.

"The door is heard." "One fan is called a door, two fans are called a door. It is also called a door in the east of the hall, and it is called a door in the area of ​​the house."

"Who is outside the door?" It was Mr. Rongli.

"I, Guo Jia, will the young master get up?"

"Hold on a moment." Young Master Rongli prepared his clothes and then opened the door to greet him.

"I've seen the young master." Guo Jia smiled very well.

"I've seen the chief clerk." Rongli was a little panicked: "Please talk in the house."

"please."

When the guest and the host sat down, Guo Jia suddenly sniffed: "The sachets that the young master carries are very strange. Can you give them the recipe?"

Rongli's face turned slightly red: "There is no sachet, it's my body fragrance."

"Forgive me, forgive me." Guo Jia hurriedly apologized, and a smile appeared in his eyes.

"It's okay." Rongli hurriedly concealed: "Those who don't know will not be guilty."

"The young master is proficient in Chinese, but it is often different from the Wuxi local accent. Does it come from other places?" Guo Jia did not pursue it either.

"I am not from the Wuxi tribe, but from the West Ou (ōu) in Yulin." Rongli told the truth.

"So that's it." Guo Jia nodded slightly: "Since he is from Jiaozhou, why are he stranded in Wuxi?"

"The family has changed, and the disaster has come to this point." Rongli replied casually.

Guo Jia did not pursue the matter. So he explained his purpose: "The court reopened the Hengshui Commander, and soon he would become a territorial sea city, and went up against the Yuan River to trade with Wuxi. The young master has been here for a long time, can he inform him of the waterway? "

Looking deeper at Guo Jia, Rongli said: "Yuanling (county), the mountains are rugged, the water flows are fierce, and there are more dangerous beaches. Especially the section of Yuan River near Yuanling, Qinglang, Hengshi, Jiuji, Bairong, etc., dangerous beaches one after another. Qinglang is the most dangerous. It is known for its "shallow, dangerous, fast, narrow, and curved". The long beach is rushing straight for more than 50 miles, and it is also the longest of the Yuan River. It takes only a moment to go downstream, but it takes a whole day to sail against the current."

Seeing that Guo Jia did not comment, Rong Li said again: "When General Fubo and Ma Yuan arrived at Qinglangtan against Yuan River, the army was trapped in Hutou Mountain on the south bank, and it was difficult to make an inch of progress. He once sighed, "The river surging Wuling is deep, and birds cannot fly across the river, and the beasts cannot come." Even if the people in Wuxi cross here, they also need to get off the boat and walk, and after passing Qinglangtan, they have to board the boat before boarding. When they arrive at Jiuji, Hengshi and other beaches, they also need to use the strong men on the shore to pull the boat to cross the beach."

"So that's it." Guo Jia nodded gently: "As big as the Youlin, can it be crossed?"

"I definitely can't." Rongli shook his head apart.

Seeing Guo Jia's face showed suspicion, he seemed to be disbelief. Rongli said again: "When I came earlier, I saw a 'strange stone' on the rocks on both sides of the river. It was densely packed with holes and looked like honeycombs. People in Wuxi called 'hoemen rocks'. After asking, I realized that it was not natural. Honeycombs on the stone were countless boatmen and boats in Wuxi. When I was holding poles, I hit the 'oop eyes'. When I flew down the river, I was about to hit the reef head-on, and I put my iron bamboo pole in my arms and supported it with all my strength. The iron and stones hit each other, and the sparks had not yet ended, and I had already gone ten miles. If I hesitated, the boat was destroyed and the people were killed."

"In other words, if you cross the Yuan River, you will have to remove the underwater reefs."

"This..." Rongli said hesitantly: "The water flows fiercely and cannot be anchored. Whenever a craftsman goes into the water, he is swept away by turbulent flow. How to remove the reef."

"If you want to know the details, why don't you look at it?" Guo Jia pretended to be mysterious.

"That's good, that's fine." Rongli nodded slightly.

This was called Shangshamoke and others to go together.

The downstream of the Yuan River is wide, which is conducive to boating. However, when you arrive at Hutou Mountain, you will encounter dangerous shoals. In the 24th year of Jianwu, General Fubo, Ma Yuan, led his troops here. Because the mountains are high and the beaches are dangerous, the army is trapped at the foot of the mountain, and it is difficult to make progress. The weather was hot and many soldiers died of illness. Ma Yuan ordered his subordinates to carve stones into rooms to escape the heat. According to legend, a total of forty-eight rooms were built, which could accommodate several seats.

He rode the rost of the rost and the big and small boats, and went back to the Yuan River, Shamoke and others stood on the deck, talking a lot: "I heard that the king had 'decided and eliminated stones' to relieve the local floods. It is possible that there are other methods, but it is unknown."

"The reefs are everywhere on Qinglang Beach, like stone forests in the water. The water flows fiercely and it will plummet for hundreds of miles. There is no way to anchor, and there is no place to stand a cone. So how can you do it?" Shamoko didn't believe it.

"There was a Ji State's agency ship that was reversed into the Yuan River. But I didn't know it would be related to today's affairs." Someone said.

"Why bother, you can tell by looking at it." Shamoko waved his hand.

After exploring doubts, after sailing for several days, everyone finally arrived at Hutou Mountain.

"This is..." Everyone on the deck was already shocked.

I saw that a row of hanging buildings on the waterfront rock of Hutou Mountain was built out of thin air. It was like a plank road, hanging on the mountain rock. On the other side of Hutou Mountain, there were also several cargo ships lined up to strand on the shore. Several hanging cables were crossed through the hanging building and the crane arm of the machine on the ship, blocking the water surface across the water.

There are other special-shaped mechanical ships, which are being dragged by suspended cables and moored in the torrents in the middle of the river. The mechanical ships are roughly lying in the shape of a "gong" shaped catamaran. Between the two ships, there are cross beams, and a grooved rail is made on the middle of the beam, and a cast iron hammer is placed inside. The conical hammer head is directly aimed at the water surface. The hammer can be transmitted through gears, moving left and right in the groove rail, up and down.

"What is this?" Seeing that his companion was so shocked that he opened his mouth wide, Rong Li asked.

"This ship is commonly known as the "I-boat", also known as the "Yugong Ship". It is named after the bridge tray on the ship, and the "Yugong Hammer" is hung on it." Guo Jiayan said: "Yugong Hammer, by borrowing the lower wheel of the boat, the faster the water flow, the more it is, the more powerful it is to borrow. In addition, there is an underwater steel cable connected to the animal power turbine in the suspended building. The hydraulic power and animal power are lifted at the same time. When the Yugong Hammer rises to the top, it will fall on its own and hit the reef hard. This will be repeated until..."

Before he finished speaking, he continued to hit hard, a reef collapsed with a bang. He was taken away by the torrent, and his corpse was gone. Due to the force, it penetrated the entire reef from top to bottom. It would not collapse in half. When the principle was created, Liu Bei designed it himself to use the ramming machine for the ramming pile columns.

"What should I do if the underwater reefs are?" Rongli asked again.

Guo Jia pointed to a Yugong ship under construction and said, "First nail a 'Yugong nail' into the reef, lead the nail cap out of the water, and then hit it hard."

"Why can the Yugong ship berthed in the torrents?" Shamoko asked.

"It is the steel cable from across the river to pull it." Guo Jia pointed to the two sides of the Yuan River, and the hanging tower on Hutou Mountain and the other side of the river were stranded.

"How can a machine boat sit on the shore?" Shamoko asked again.

"The water-tight compartment at the bottom of the ship is equipped with a secret door next to it. When the gate is opened, the river water is poured in. The machine ship sinks and strands. The water is discharged, and the machine ship floats up and gets out of trouble. It is easy to lift and lower." Guo Jia replied again.

"So that's it." Rongli suddenly realized. In a nutshell, he controlled the shipwreck.

Guo Jia smiled and said, "This place is dangerous, so we build a hanging building first to support it. Generally, we only need to set up two 'hundred-legged boats' to sit on the beach. You can pull the steel cables across, pull the Yugong boat to the center of the rapid flow, and smash the reefs."

"What is a centipede boat?" Shamoko asked.

"It was transformed from several ships, or even dozens of ships, from the two water and land, with a "city siege cart" and light boats were connected in series. They looked like a hundred-legged insect (horse), hence the name." Guo Jiazhi said: "You can swim near the shallow water or shallow water on the shore, and then release the water to sit on the beach."

"A hundred dangerous shoals, how long does it take to hammer?" Shamoko said with a pussy.

"A hundred dangerous shoals are used at the same time. I think it will not take long." Guo Jia's wind and clouds are quiet.

"Gudong!" Everyone was shocked.
Chapter completed!