As the two huge oars coordinated with each other, the behemoth Zhenhai had slowly sailed away from the dock. Everyone stood at the stern of the boat and found that the waves at the stern seemed to be getting more and more violent, but the hull of the ship was still stable, and the wind began to blow in their ears, which showed that the Zhenhai was speeding up.

"There are two fan-like thrusters at the stern, which I call 'oars', and there are actually ones on the side of the boat, but they are much smaller to assist in tight turns. Fan should be familiar to everyone, our Gewu production, now it is just a wooden fan blade into a steel fan blade, and it has been magnified countless times......"

"Of course we know the fan, it takes manpower to pedal the roulette wheel connected to it to make it turn, Lord Governor, how much manpower does it take for a behemoth like Zhenhai to make it move?" Castro asked.

As a holy product to cool off the heat, the fan has long been on fire, and many people have imitated and innovated it to make it more diverse. Although Zhang You is committed to the implementation of the patent law, in order to stimulate the enthusiasm of the private sector for research and development, he not only pursues it, but even expresses his encouragement. For these reasons, this small product has been sold abroad and is known all over the world. These are all statuses on the ship, and there are really no fans who have never seen them.

"yes, there's got to be a core motivation, right? In order for such a huge warship to move freely, I think it would take at least 500 people to work together. Kayama Hisaka said, and the rest of the people nodded one after another, and everyone seemed to have forgotten the heat engine that Zhang You had mentioned.

"Mr. Kayama Hisadaka, wouldn't you be surprised if I told you that there were less than thirty people who operated the Zhenhai on the sea, and that the rest were all combatants?"

"Are you kidding? Such a large battleship, less than thirty people? You're welcome, aren't we all three-year-olds? ”

Biryama Hidaka didn't have time to speak before he was preempted by Koizumi Saburo, which was indeed a little unkind, but it said everyone's heart, so before the words landed, it attracted a chorus.

"Facts speak louder than words, come, please follow me to the bottom warehouse to visit." Zhang You was not annoyed, said with a smile, and walked forward first.

The people hastily followed.

"Yuan Jing, you are not so surprised, obviously you should know the inside story, right? Tell me, what's going on? Yin Zhengmao fell behind and grabbed Qi Jiguang. When the Lin couple heard this, they also slowed down and pricked up their ears.

"I said, sir, you don't look like a feudal official of the governor of Liangguang now, how can you look like a child?" Qi Jiguang made a joke first, which caused the white eyes of Boss Yin Zhengmao, and then said: "Okay, it's just a joke, don't worry, in fact, the reason for this effect is mainly the power of the heat engine......

"Heaters? What the hell is that? Redsleeves couldn't help but interject.

Qi Jiguang glanced at her and smiled: "Lin lady, right, have you cooked and boiled water?" ”

Red sleeves nodded, I don't understand what this has to do with the hot air, Yin Zhengmao and Lin Afeng also looked ignorant, Yin Zhengmao said dissatisfiedly: "I said Yuan Jing, don't sell it, okay?" What does this cooking and boiling water have to do with the heater? ”

"Of course it has a relationship, it has a big relationship, Zicheng said that the reason why the heat engine was born was because he accidentally found that the heat generated when the boiling water boiled the top of the kettle and the inspiration, and then he and his husband did an experiment with a copper kettle, filled the copper kettle with water, sealed the lid with copper juice, and then stuffed the cork at the spout, and the fire burned violently, guess what? After the water boiled, the heat could not be vented, and it gathered more and more, and finally the wooden plug was pushed open and shot on the thin wooden board, which actually hit the wooden board in half......"

"So powerful?" Red Sleeves listened movingly, imagining that kind of scene, and subconsciously whispered.

Lin Afeng said: "I can't imagine that the hot gas produced after boiling water has such great power, so the so-called hot gas engine uses this principle...... Heat is commonplace, three-year-old children know it, but no one carefully explores it, and only a genius like Master Zhang can do such a thing that turns decay into magic, which is really admirable. ”

"Who says it's not, Zicheng's kid's brain is different from normal people, before him, who thought about magnifying the Kong Ming lantern and then taking people to the sky? Let me tell you one more thing, Gewu Institute has recently invented a new thing, called the telegraph, as long as the line is laid in advance, even if it is far away, if you want to transmit any message, you can send and receive it, and the delay is almost negligible. ”

"Is that the line laid by the construction team? So, what the rumors say is true? Lin Afeng asked in surprise.

Yin Zhengmao's eyes widened, the construction team brought by Zhang You from Beijing began to lay lines from Hangzhou to the direction of Beijing, he was far away in Guangdong, and had not heard of this news.

"Naturally, it's true, it's already been tested by facts, there are several miles between Wenyuan Pavilion and Qianqing Palace, send news here, and receive it instantly."

But how, exactly? Doesn't that sound too mysterious? Yin Zhengmao felt that this was very incredible, but his heart was beating hard, as the governor of the two provinces, he knew too well the huge role that fast communication could play, so to speak, if this telegram was really as powerful as Qi Jiguang said, its huge impact would even exceed the inventions of hot air balloons, muskets, artillery, etc., and play a decisive role in the rapidly changing war situation.

Lin Afeng and Red Sleeves are not stupid, and they can also think of the meaning, so they also pricked up their ears.

Qi Jiguang smiled bitterly: "This Lord Yin, you asked, I'm just a big boss, I can't figure out such a complicated problem, if you are really interested, let's ask Zicheng." ”

The group visited the hot gas chamber, the transmission device, and the other facilities inside the cabin - of course, the core secret Zhang You naturally would not tell them - but they already understood that what Zhang You said was true, and there were indeed less than thirty people controlling the navigation of the Zhenhai.

In the end, the group returned to the deck with Zhang You in a complicated mood.

The speed of the voyage has been raised to the extreme, and the sailboat, which was originally only a small dot, has been clearly distinguished, which makes the faces of those foreigners who are already in a complicated mood even more ugly.

It was a huge fortune ship standing by four Ming naval divisions, and before the Zhenhai, it belonged to the most powerful naval ships of the Ming army, and was about the same size as the San Martin of the Spanish Armada.

"Prepare for battle!" Zhang You's order was conveyed, and everyone's eyes widened to see what kind of strength the Zhenhai could show.