I do research in ancient times

As the boat travels faster and faster, the Red Rock Beach is already in sight.

Bu Li's heart hung in his throat.

With a long roar, the sailboat loaded with stones began to turn around.

The steering angle of the big ship is not small. Fortunately, the steering wheel is a veteran who is used to running the Amur River. Not to mention rich experience, he also knows the water conditions in the Red Rock Beach area by heart, so it is easy to turn the rudder.

But once the direction is changed, the tailwind becomes headwind, and it's time to test your skills.

"The helmsman pays attention to the steering angle, the bow of the boat is parallel to the river bank and the right front is ugly."

Ning Fei began to give orders.

"The mainsail mast is adjusted to the ugly position after the bow is turned."

Hearing what he said, Bu Li and Helan Qiqi stared wide-eyed.

Front right of the bow? !Adjust the mast to the ugly position again?Didn't the boat just run to the river bank?

With the addition of headwinds, it really won't hit the shore? !

The two of them instinctively looked at the captain, who was an experienced sailor, could he endure such tossing by a layman?

Unexpectedly, the person who is usually grumpy, but this time he didn't say a word, the hands holding the steering wheel were clenched white, but he still adjusted the boat steadily to the direction Mr. Ning requested.

If you don't object, the sailors can only listen to Ning Fei.

So the mast sail was adjusted quickly, the big ship turned around, and headed upstream against the wind and the current.

The strong westerly wind blows towards the face, blowing the sails up and down.Just as Helan and Bu Li were worried, the ship was traveling along the bow, and the speed was not slow.

Fortunately, the river channel of the Amur River is extremely wide, and the big ship can move sideways all the way, and it can be used without hitting the river bank immediately.

"Adjust the bow of the ship to the unitary position."

Seeing that the angles were almost the same, Ning Fei gave another order.

"The mainsail mast is adjusted to the unitary position after the bow is turned."

what?

Bu Li couldn't help being surprised.

From the ugly position to the unitary position, what is the difference between this and a U-turn! ?But it's just running to the other bank of the river!

He looked at the handle again.He froze his head for a moment, and then seemed to realize something.

The capable middle-aged man remained silent, he held the rudder firmly like a rock, and adjusted it precisely to the direction Ning Fei needed.

After the boat stabilized, the mast sail also turned, and the wind bulged the triangular sail again. The speed of the boat was accelerated, and it rushed towards the other side of the river.

"That's it."

Ning Fei nodded approvingly, and shouted at the boss.

"By repeatedly following the zigzag line like this, the boat can go up against the wind."

At that moment, he knew that the sailor had understood what he meant.As long as you keep your head on the rudder, the boat will be fine.

"Here."

He nodded his head, staring quietly at the river in front of him, with a solemn face, as if he was dealing with the biggest challenge in his life.

This was the first time he spoke since he got on the boat, and it was actually the official language of Yechao, which was beyond Ning Fei's expectation.

"What's the name of this big brother? But have you been to the Central Plains?"

He asked Helan beside him.

Helan was still immersed in the shock of going against the water and the wind, and he couldn't extricate himself until Ning Fei repeated the question twice before he murmured.

"Uncle Linka...he used to be a sailor, he has been to the Central Plains, and he can speak your official language."

He suddenly grabbed Ning Fei's shoulder, and asked anxiously as if he had suddenly woken up.

"Why can a ship go against the wind? Why can it borrow the wind after walking this broken line? Why?!"

It's fine if it's a small boat, it may not be impossible to turn the sails to borrow the wind.But this time they set out with a big ship!It's a fully loaded ship!How did Mr. Ning manage to walk against the wind just by changing the sail? !

His hands were strong, he was agitated and lost control of his strength, grabbing Ning Fei and screaming in pain.

Feng Kai immediately grabbed Helan, forcibly dragged him aside, and threw him on the ground shamelessly.

Helan also knew that he was being rude, so he didn't care about losing face in front of everyone, instead he got up and apologized to Ning Fei.

"I'm sorry, Mr. Ning, did you get hurt? I'm a rough man, I forget etiquette when I get excited, so I apologize to you!"

Ning Fei stretched her painful shoulder, shook her head, and signaled that she was fine.

Helan breathed a sigh of relief, and immediately remembered his previous confusion, and hurriedly asked.

"Then can you tell me why the headwind boat can still go?"

This question is a bit complicated to say the least.It involves knowledge of aerodynamics and principles of fluid mechanics.To put it simply, the wind produces different forces on both sides of the sail, making the ship move sideways, and the component forces decomposed by the wind force in different directions can push the sailboat forward.Therefore, the sailboat does not sail against the wind in the true sense, but sails in a zigzag route at a certain angle with the wind direction.The smaller the angle between the ship and the wind direction, the slower the speed. Although the larger angle can guarantee the speed, the voyage will be longer.

Just for Ning Fei, the extended voyage is also one of the results he pursued.

In this way, it is not easy for the small boats of the Xihu people to predict the course of the boat, and it is not easy to outflank and siege.

However, these logistics knowledge are not easy to explain. It is difficult for Helan to have a concrete understanding of the abstract mechanical decomposition alone.

He tried his best to speak as simple and straightforward as possible, but Helan was still blinded by the mosquito coils, as if he had drunk fake wine, his mind was lost, and he was still dizzy.

Seeing his sluggish face, Bu Li thought he was rejected, and Bainian comforted him.

"The ship against the wind is someone's secret method. It would be great if we could change the ship for us. It's normal not to tell you."

"Do not……"

Helan shook his head as if wandering.

"Mr. Ning answered it for me," he paused, with a look of despair.

"But I don't understand it at all. I only vaguely know that it's something extremely powerful. Is the shipbuilding skill of the industry already so advanced?"

Bu Li couldn't answer this question, but he looked at Mr. Ning with even more awe.

Donghu's shipbuilding skills are well-known in the grasslands, and the boats he has seen are no different from Donghu's, and he never knew that there is such a magical way of moving against the water and against the wind!

However, everything was happening right before his eyes, and he couldn't believe it.

No wonder Ye Suli wanted to go to the Central Plains. His son Klei said that Mr. Ning's Jiuling City has a huge stone hammer pushed by water, coals that can burn for several days, crystal windows and a heated kang... What is it? What a magical existence? !

The leaders of the two tribes couldn't recover for a long time, but the leader on the other side had already tasted the headwind boat.

There is no need for Ning Fei to give instructions anymore. Whenever it is necessary to turn, he will hold his head independently and remind the crew in time.The boys who turned the sails were also very spiritual, and they quickly shared a tacit understanding with Batou.So amidst the hunting westerly wind, the big ship steadily walked on the zigzag line, sailing all the way towards Nanshi City.

"It's a good handle."

Ning Fei looked at the serious middle-aged man, nodded, and whispered to Brother Mu Ye secretly.

"Very savvy, he understood the key points of zigzag sailing in just two strokes, and he is a talent that can be cultivated."

Hearing what he said, Feng Kai glanced at him with a half-smile.

"Want to cultivate? Then you have to bring people back to Jiuling Lake."

"If he has an idea, it's okay to bring it back. Anyway, even if there are seas and ships, there must be a pillar that can organize the fleet."

,

As he spoke, Ning saw that he touched his chin, thinking that it might not be impossible.

What happened to the middle-aged man?Isn't Nada also a middle-aged man, and he is still willing to run with them? !

As long as the bait is enough, you are not afraid that the big fish will not take the bait!

Under the control of the handle, the boat quickly entered the Nanshi Wharf.

The pier was still crowded with people, and it was unknown who was the first to see the shadow of the boat, and there were deafening cheers from the river bank.

"It's back! They're back!"

"How did you come back so quickly! I thought I wouldn't be able to see the shadow of the boat until evening!"

"Really?! Calculating the time, it's not too late to return to the city. Could it be that you haven't reached the Red Rock Beach?"

You can say anything, but for the three tribes who live on the water, the safe return of the boat to the port is something worth celebrating.

As soon as the boat came to a standstill, the young boy who had something to do jumped on board and marveled at the three-penna sails.

"Can this sail really sail the ship?"

"Won't there be air leakage?"

"How do you go back to town without rowers?"

"You really arrived at Red Rock Beach? Why are you so fast?"

Questions came one after another, with envy that couldn't be concealed.

Even though everyone was about the same age, I wasn't selected. Being able to be a sailor on Mr. Ning's boat was a glorious thing!

But none of the sailors was in a hurry to answer their questions.

Everyone is seriously furling the sails.The triangular sail, which was thought to be a fool before, has become the treasure of the sailors, and the strength of the sail is so gentle.

After everything was sorted out, he led all the crew members out of the wooden boat.

Ning Fei and the others followed at the end, watching helplessly as the crew of the Chinese crew was flooded by people on the pier.

"Why did you come back so quickly?"

Tuhan rushed forward and asked worriedly.

"But what happened?"

Shaking his head.

"No, everything is fine."

Batou was a man of few words, and his words were too concise, which made Tuhan anxious.

But there is no way, Linka is the leader, he knows the sailing situation best.

So Tuhan had no choice but to restrain his anxiety, and asked patiently.

"Then why did you come back so fast?"

"A sail can go against the wind."

Hearing what he said, Tuhan was taken aback.

"Really?"

Linka nodded.

"Otherwise I won't come back."

Tuhan almost fell backward in anger.

Fortunately, Feng and Ning also disembarked. Clay jumped up to find his brother Fei early in the morning, and Tuhan also took advantage of this to follow.

Unexpectedly, Linka was faster than him. He stepped in front of the old man in one step, pushed through the crowd around him, and found Ning Fei first.

"Mr. Ning."

This time Linka was no longer taciturn, and stopped Ning Fei and spoke a long string of Amilei.

Ning Fei couldn't understand, so Clay on the side translated for him.

"Brother Xiaofei, this uncle said that he could take us back to the Central Plains by boat," Clay scratched his head, and suddenly suspected that he might have heard it wrong, so he turned around and asked.

After Linka confirmed that he hadn't misunderstood, Clay said with a confused face.

"But he hopes to visit our place, preferably to see our big ship."

"Brother Xiaofei, when will we have a big ship?"