"This—" Zhang Yitai blinked his eyes and said with some disbelief: "Is it the same principle as the water cup cover? "

Zhu Youxiao nodded for granted and said, "Yes, the principle is the same. I also want to build a water jet truck that can spray water from the water tank - ten steps away to put out the fire."

The originator of Chinese fire trucks should have appeared during the Qing Dynasty. They also used the principle of pumping and pressurization to spray water out more than ten meters with manpower to extinguish fires.

Zhu Youxiao thought about not only extinguishing the fire, but also thinking about spitting out flammable oil to burn Jiannu!

This is the flamethrower of the Ming brand. Hu, Hu, Hu, Hu, fire dragons swept over, turning Jiannu into fire people jumping around, screaming, and exuding the smell of barbecue. Isn’t it very visually shocking?

Wang Jizhong circled the game several times, but he couldn't figure out what the principle was.

Don’t worry about whether it looks simple or not, or how useful it can be. This is your ability to create it. If you don’t mean it, this thing is indeed useful, and it is better to throw a bucket into a well to pick up water.

"I admire you, I admire you." Wang Jizhong bowed deeply to Zhu Youxiao, "If you can apply what you learn, Brother Shen will be far better than us."

"A little play may be useful, but I dare not accept the praises of Brother Wang." Zhu Youxiao was humble and turned to Chen Zilong and said, "Brother Chen, please stop!"

Although Chen Zilong is a scholar, he has the strength to do so. After pressing so much, the bucket is almost full, and he does not breathe or sweat.

With a refreshing laugh, Chen Zilong stopped exercising and said with a smile: "This thing is very interesting. Only Brother Shen is so smart can he study the principles. But until now, he hasn't figured it out!"

Of course you can't figure it out. Madberg hasn't thought of the hemisphere experiment yet. I'm just standing on the shoulders of a giant.

Zhu Youxiao said with a smile: "I didn't think it down by myself. If you are interested, you can feel at ease to study in the new study and get in touch with more advanced science."

Xia Yunyi looked at Zhu Youxiao and asked in surprise: "Science? Does Brother Shen define those principles in this way?"

As everyone's eyes looked at, Zhu Youxiao nodded vigorously and said, "I think it is science that promotes social development and an important condition for the country's prosperity."

After pausing, Zhu Youxiao reached out to invite him, "It's cold outside, so let's talk inside!"

Chen Zilong and others nodded and said yes, and re-entered the hall.

They now have a step further in their understanding of Zhu Youxiao. Although they have various speculations about his identity, they always have refreshing remarks, but they are becoming more and more attractive to them.

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Boom, Boom, Boom... The continuous explosions brought out dust, snow and soil, and the messy things that rose into the air in the black smoke.

Two days later, Jiannu launched an attack on Ningyuan City again.

Since he dared to attack again, he would definitely rely on something. Xiong Tingbi stood on the city, looked at the enemy with a telescope, and observed their new tricks and new tactics.

The coat pushed the car in front, which did not change. The archers behind it seemed to be the same. Except for the direction of the attack to the south of the city, there seemed to be no change.

The car pushed to the trench, but the trench was not filled. After a while, a rocket flew up in the air, like a group of fire crows, rushing towards the wooden stake formation.

Oh?! Xiong Tingbi raised his eyebrows and raised the corners of his mouth. This is a new tactic after learning from the lesson, using fire to burn the wooden stake formation.

The rocket fell into the wooden stake array, some plunged into the snow and quickly extinguished; some shot into the wooden stakes and slowly burned. With the continuous launch of the rockets, the fire of the wooden stake array became increasingly large.

Not bad, although it was a little slower, it reduced the casualties of being shot by muskets and bombarded by sky thunder in front of the wooden stake formation.

Xiong Tingbi put down his telescope, thought for a moment, but did not issue any orders. If he ordered the soldiers in the trench to put out the fire, he would inevitably be killed by bows and arrows, which was what Jiannu hoped.

So what if the wooden stake array is burned? For this purpose, do you get on the rebuilt cart, the cart coat, and the archers behind it?

Except for the burning wooden stake array, the rest of the scenes seemed to be a reenactment of the last attack.

The Ming army's bullet-spreading chariots and artillery bombarded, destroying the chariots and killing the enemies behind the chariots. But Xiong Tingbi felt that Jiannu should have a second move.

Xiong Tingbi thought for a while, turned to the commander and ordered: "Tell Jin Guofeng to be prepared to retreat to both wings; then pass on the orders to Zu Dashou and Huang Degong, and the defenses in the south should be ready to respond when retreating."

Seeing the commander running away, Xiong Tingbi sent another order to mobilize troops to the city and strengthen the defense at the top of the city. Only after making these preparations did Xiong Tingbi feel relieved.

The defense facilities in Ningyuan City are so complete that even if Jiannu is placed under the city, it is obviously impossible for them to break through the city.

Of course, Jiannu who approached the city could shoot with bows and arrows. But what advantage could they get when shooting against the condescending musketeers on the city?

Four or five miles away from the front battlefield, Nurhaci listened to the continuous reports of the horse's trip, with no expression on his face.

Fan Wencheng next to him was a little nervous, listening to the battle situation ahead with his ears. The idea was made by him, whether it was success or failure, of course it had a great impact on him.

Speaking of Fan Wencheng, the theory of bloodline of "I am a hero and a hero" will completely collapse. Because he was actually the 17th generation grandson of Fan Zhongyan, a famous minister of the Northern Song Dynasty.

Just like Qin Hui's grandson Qin Ju bravely resisted the Jin Dynasty in Qizhou, and after the city was broken, his family went to the national crisis. His grandfather and grandson were not the same as his descendants for more than ten generations, and it was not uncommon to have a very different life from their ancestors.

Fan Wencheng was neither forced nor subjugated. However, after Jiannu captured Fushun, he took the initiative to surrender with his brother Fan Wenlu, and he could be called a complete iron-core traitor.

Although the old slave knew that Fan Wencheng was a descendant of Fan Zhongyan, he once said to Zhu Beile: "This famous minister is a good minister, and he will meet him well." But this is also a way to win people's hearts and show his love and magnanimity.

From taking the initiative to surrender to the Battle of Guangning, Fan Wencheng was not only not valued, but was discriminated against and humiliated by the senior officials of the Later Jin Dynasty.

Guangning was frustrated, and Fan Wencheng had no good way to face the tough city and the Later Jin Dynasty's weapons and equipment.

But he began to study the art of siege. Although they were all old people in historical books, he still got a lot of inspiration. After the first attack on Ningyuan failed, he offered suggestions, hoping to be reused and promoted.

Listening to the continuous rewards of the explorer, the tactics of burning the wooden stake formation were first successful, but the Ming army did not forcefully stop it. Fan Wencheng quietly breathed a sigh of relief.
Chapter completed!