Seeing Zhao Feng go and return, Master Wang and Ma Jun didn't know why, could there be anything else?

"Master Wang, you can find me a carpenter who works well and a craftsman who works finely, I come this time is a trivial matter, you don't need the two of you, you just hurry up and study Feitian!" Zhao Feng commanded.

When Zhao Feng came in just now, he found that the two of them were making a small hot air balloon, which seemed to be doing an experiment. Not to mention, what the two of them did was really like the Kong Ming lantern created by Zhuge Liang in history!

Zhao Feng has to go a little longer? The two of them have basically prepared the materials and are working on it!

"Yes, my lord, later!" Master Wang nodded, turned and left.

"This flying cloth must be wear-resistant, and it must not be breathable! Do you understand? After Master Wang left, Zhao Feng said to Ma Jun, "The best, you can directly use the outer layer of oilcloth, and add an inner tank to the inner layer." ”

"Lord, there is one thing Ma Jun doesn't understand, and I want to ask my lord!" Ma Jun said.

"There's something but it doesn't hurt to say it!" Zhao Feng smiled slightly.

"Can this thing really fly into the sky? If so, then what is his principle? Ma Jun asked.

"Hehe, you say this!" Zhao Feng smiled slightly, and secretly thought to himself in his heart how to explain this matter?

"Do you know about thermal expansion and cold contraction?" Zhao Feng asked with a smile.

"Thermal expansion and cold contraction?" Ma Jun frowned and shook his head.

"Forehead...... "Zhao Feng is difficult to do now, if he doesn't know the heat expansion and cold contraction, "Then when you hit the iron, did you find that the weapons or other iron tools you made are smaller than before the cooling after cooling?" ”

Listening to Zhao Feng's question, Ma Jun lowered his head and pondered, as if it was really as Zhao Feng said: "It seems to be like this, when I was before, I always thought that I was dazzled or misremembered, is this true?" ”

"That's right, it's not that you're dazzled, but that's really how it is!" Zhao Feng nodded, "This is the phenomenon of thermal expansion and cold contraction of metal!" The so-called phenomenon of thermal expansion and cold contraction, basically all substances will exist, expand by heat, pre-cold and contract! This is normal! ”

"I see!" Ma Jun nodded suddenly.

"Now that we understand this phenomenon, let's talk about this flying sky." Zhao Feng pointed to the drawing, "What we breathe now is that I call it air first, and when the air expands when it is heated, the specific gravity will become lighter, so this flying sky will fly upward!" ”

"So how do you get it down or up?" Ma Jun asked.

"The method of landing is very simple, as long as the fire is extinguished, or the fire is weakened, the specific gravity of the air can increase, and the flying sky will naturally fall!" Zhao Feng said, "However, if you want to make it rise, one is to increase the fire, and the other is to throw the flying counterweight down!" You see, didn't I arrange a couple of weights on each side? That's what it is! ”

"I see, thank you for your doubts! Ma Jun understood! Ma Jun said.

"Hehe, what's this, if there's anything you don't understand, you can ask me at any time!" Zhao Feng smiled slightly.

"Thank you, my lord!" Ma Jun saluted Zhao Feng.

At this moment, Master Wang led two young men to Zhao Feng.

"Lord, these two are subordinate apprentices, this one is named Jiang Han, what he is best at is carpenter work, this one is called Li Xin, and what he is best at is fine work." Master Wang introduced to Zhao Feng.

"Good! You two come here, I've got something I want you to help make it. Zhao Feng said.

Zhao Feng led the two to the side of the table, took a pen and paper, and drew the barrel of the telescope on it. Then he handed the drawings to Jiang Han: "Look at this thing, there's no problem for you to make it, right?" ”

"Of course not, don't worry, my lord, in two days at most, I will definitely make this thing!" Jiang Han patted his chest and promised.

"Good!" Zhao Feng nodded, and then drew the pen and the tip of the pen on another piece of paper, of course, the fountain pen has not yet made the materials for the pen bladder, so what Zhao Feng drew was just a dip pen!

"You can make this by looking at this, right?" Zhao Feng handed the drawings to Li Xin.

"Dare to ask the lord, what is this?" Li Xin looked at it, very puzzled in his heart, it seemed to be a pen, but it didn't seem to be! If this is a pen, can it be written?

"It's a pen, and since the nib is made of steel, I'll call it a fountain pen!" Zhao Feng smiled and explained, "This is a fountain pen dipped in water, and you can write with ink!" ”

"Can this really be written?" Li Xin looked at the drawings in disbelief, and then at Zhao Feng.

"Naturally, you will know if you make it!" Zhao Feng smiled slightly, and didn't care at all about Li Xin's suspicions, "But it must be manufactured according to the drawings, and it can't be bad at all!" Do you understand? ”

"Don't worry, my lord, this little problem can't stop me!" Li Xin patted his chest and said.

Zhao Feng looked at Jiang Han and Li Xin's appearance, and couldn't help but secretly complain in his heart, this is really Master Wang's apprentice, exactly the same as Master Wang's demeanor!

"Okay, I'll just wait for your good news, I'll leave first, whoever you are, just go to my house and find me when it's done!" Zhao Fengdao.

"Yes!" Not only Jiang Han and Li Xin, but even Master Wang and Ma Jun responded in unison.

Seeing this, Zhao Feng nodded with satisfaction, then turned around and left, wanting to go back.

On the way, he passed by a very popular place, and Zhao Feng looked up and saw that it was the Fenghua Xueyue women's products store!

Seeing this popularity, Zhao Feng couldn't help but say again and again, this door is full of people inside and outside, and basically all of them are women! It seems that Bian Xue's business is doing well! In that case, is it time to consider opening a branch?

Zhao Feng smiled slightly and wanted to enter the store to have a look, so Zhao Feng walked towards the store.

The customers naturally saw Zhao Feng walk in, and they all looked at Zhao Feng with strange expressions. It clearly says a feminine store, what is this man doing when he comes in?

However, the service staff was not rude at all, and when they saw Zhao Feng entering the store, they hurriedly greeted him: "This gentleman, I don't know what you want to buy?" Do you want to buy it home for your wife? ”

Seeing the service staff's service attitude, Zhao Feng smiled slightly, very satisfied, it seems that for this point, Bian Xue did not give a little explanation!

Zhao Feng smiled slightly, took out a small order from his waist and showed it to the waiter, and then pointed to a figure who was busy over there, and smiled slightly.

(End of chapter)