In the last part of the long hall, most of the results of the invention of the old phoenix bird are placed.

According to the size and shape of the objects, various styles of metal cabinets and brackets are designed, and these cabinets and brackets alone can be called inventions.

Since the old phoenix bird has almost no experience of living in the mortal race, there are no rules and regulations on the furniture and brackets he makes, but they are completely based on actual needs.

The things that come into the eyes of Cheng Zhong can be called strange and arbitrary.

Some cabinet-like furniture is embedded in stone walls, some are suspended in mid-air with metal chains, some are fixed to the ground, and some are wheeled to push around.

The same is true for the brackets that hold the objects in place, some lean against the corner, some prop up on the ground, and some stick out of the wall like two human arms, holding the object firmly in the hand.

The first thing that caught Cheng Zhong's attention was a metal bird like a phoenix.

The bird is the largest object in the hall, about ten meters long from head to tail, and the distance between the tips of the two wings is about seven or eight meters wide, which is somewhat similar to modern human-made airplanes, except that the two wings are mobile.

This item should be a machine built by Lao Fengniao completely according to his original body, but I don't know if it can be used.

"Oh, Master, this phoenix is really magnificent, it's just ...... I just don't know if I can fly?"

Cheng Zhong asked, looking up at the tall metal phoenix.

"Ho ho, this is a means of transportation prepared for the division for himself, it will take me a hundred years, of course I can fly. ”

The old phoenix bird said with a smug look on his face.

"That'...... Where does it come from?"

"Power is a chemical reaction that can be sustained, as you are used to calling it, it is burning.

The burning drives the wings to flapp, and the wings drive the entire phoenix to generate upward and forward force. ”

"Oh, I see, but that doesn't prove it can fly. ”

"The power generated by the combustion and the upward and forward force generated by the wings have been accurately calculated, and this force exceeds the weight of the phoenix, and of course it can fly. ”

"Master, please forgive my disciple for being blunt, in my opinion, this phoenix you made looks good, and it may not be able to fly smoothly.

Because you don't have the conditions to test fly.

Although I don't have the relevant knowledge, what I understand is that in order for an aircraft to really fly and successfully complete the whole flight, a test flight is a necessary prerequisite.

Because the situation in the sky is different from that on the ground, the requirements for aircraft are not the same as those for ground vehicles.

Every change in the direction and speed of the wind in the sky will have a complex impact on the aircraft.

Master Zun didn't know that human beings on the earth had already invented airplanes, and now airplanes have been widely used in factories as a normal means of transportation.

The people who invented the airplane were the Wright brothers in the Western Hemisphere, and I read from the book that their airplanes had made thousands of test flights before they could fly properly, and after each test flight they were improved.

So, before the test flight, no one can say for sure whether it will fly smoothly. ”

Cheng Zhong read the story of the Wright brothers' invention of the airplane last semester, and he used what he learned from that villain book to use it here, which sounds like a no-brainer.

When the old phoenix bird heard this, his old eyes widened in surprise.

He was first amazed at the fact that Cheng Zhong had such extraordinary insight at such a young age.

Then there was amazement that the ignorant and caterpillar-like little life of the earth in His mind was even more clever than Him in this field, having invented and used flying machines normally.

Cheng Zhong's words also dealt a heavy blow to him, knocking him to the ground in an instant with the mentality of showing off to the sky.

He can be called a rigorous scientist, and he has to admit that what he said is very reasonable.

After chewing on it repeatedly, he knew that he had made the mistake of being sloppy in this matter.

"Oh, I didn't expect the apprentice to know so much at such a young age, and the old bird was taught.

I just heard what you said, the earth human race already has a high-level flying machine, which means that there should be great progress in other aspects, which is really strange.

As a teacher, I always thought that I had supernatural powers, tens of thousands of years of life, and I had an unforgettable memory, and I should be the smartest creature in the universe.

It seems that the teacher is lonely and unheard, if it weren't for the futile mention, I would still be in the dark, and I would be complacent here.

I'm ashamed!"

As he spoke, Lao Fengniao's face changed greatly, and he raised his hand and scratched his head in the strict "aviation suit".

When Cheng Zhong saw it, his heart was very unbearable, and he saw him approaching the old phoenix bird, grabbing his bulky hand with both hands and saying:

"Master, please listen to me, when it comes to individual intelligence, I don't think there is anyone in the universe who is stronger than you.

In isolation, with your own wisdom and constant research, you have invented and created so many objects and weapons that it is impossible for any one living being.

The reason why human beings on the earth have built a large number of advanced machines and weapons is entirely based on the wisdom and strength of the group and the accumulation of knowledge from generation to generation. ”

"Oh, 'crowd wisdom, knowledge accumulation', the old bird seems to understand that.

It's a pity that since I realized it, I have left the phoenix race, and I have only communicated with your master and mother, and I have communicated with the two immortals before, and I have read a lot of books from your ancestors.

Until now, I have a hard time understanding how crowds can produce wisdom.

But I know that the vain is right, and that the wisdom and creativity of the crowd seem to be never-ending.

The development of this kind of collective wisdom is too terrifying, which may be the reason why the two immortals want to limit the development of human beings. ”

The old phoenix bird said in a slightly heavy tone.

He truly felt the disciple's respect and love for him, which was completely different from his previous emotional exchanges with the two immortals and the old phoenix bird, and he was extremely moved.

"Master, wait for the disciple to win the 'Flying Dragon Gang' as soon as possible, and the next time I come to see you, there will be no interference from trivial matters from the outside world, and we can sit down and communicate.

When the time comes, I have a lot of questions to ask you for, and at the same time, I will report to you some important information about the development of human beings on the earth. ”

Cheng Zhong said with sincerity on his face.

"Well, well, 'teaching and learning together', this is the most beautiful thing in the universe.

The disciple is so clever that he must communicate everything he knows and thinks with the teacher when the time comes.

I know you're in a hurry, so let's look for the right weapon now. ”

As he spoke, the old phoenix bird led Cheng Zhong to walk forward quickly.

They came to stand in front of a steel cabinet embedded in the stone wall, and when the old phoenix raised his hand, the five-inch thick steel door opened, and saw that there were some things of different sizes and shapes placed inside.

"Master, what is this?"

Cheng Zhong couldn't understand it for a while, and couldn't help but ask.

"Ho ho, these are some explosive materials formed by the teacher in the process of chemical experiments, because the explosion is extremely strong, and it can deal with the densest large rocks, so I left it, maybe you can use it. ”

The old phoenix bird said with a smile.

"Haha, that's a good thing, it's just...... At such a high temperature, can you take it out, will it explode?"

Cheng Zhong asked with joy and sorrow.

"You can rest assured that the surface of the things made for the teacher is all heat-resistant. ”

"That'...... How do you ignite it?"

"Ho-ho, you don't need to ignite it, just pour water on it and it will explode in a minute. ”

"Oh, that...... Description: No water is visible when stored?"

"Yes, the teacher will give you a waterproof and moisture-proof bag. ”

After the old phoenix bird finished speaking, he continued to walk forward, and Cheng Zhong trotted to follow.

After a while, they came to a place full of swords.

These swords are large and small, with different lengths, widths, and narrowness, but the styles all have the shadow of ancient Chinese swords.

"These swords are imitated by the master according to the appearance described in your ancestors' articles, whether they look like them or not, their sharpness will definitely not be weaker than those ancient swords. ”

As he spoke, the old phoenix bird motioned for Cheng Zhong to take it down and look at it.

Cheng Zhong didn't move, but said:

"Master, I don't know swords, tell me which sword you are most satisfied with, and I will only bring one with me. ”

"This ...... Or don't take the sword, there is a dagger at the bottom of the wall, small and delicate, which can be used for self-defense, can also be used to eat meat, and can also be used to test for poison in food.

The most important thing is that I have written on both the dagger blade and the handle, which is the gadget I put the most effort in. ”

The old phoenix bird said with a wink.