The emperor's question really asked Yu Zhigan, what is the use of a glider? Yu Zhigan himself has never thought about it. It seems that it is useless. After all, the glider is not a real flight, and there are many restrictions. What is the use of it? Yu Zhigan really...

"Your Majesty, the glider has a great purpose, you will know later!"

Yu Zhigan did not answer, and Cheng Chumo jumped out to clear the circumference for Yu Zhigan. With Cheng Chumo's order, the pilot who had been disabled for more than a dozen times and did not die began his flight again. First, he stepped on the pedals on the glider. The glider began to accelerate slowly, and then the glider began to accelerate. When the glider came to the ramp, the speed began to increase faster. Then the glider began to fly shakingly, about ten meters away from the ground, but it did indeed fly.

Compared to the way it was like jumping on the ground when it was on the Shili Slope, this time the glider flew in mid-air, and maintained a certain height, and could also make a little turn in the air.

After about ten seconds of flying, something suddenly began to fall to the ground on the glider. Yu Zhigan was stunned for a moment and looked at Cheng Chumo: "What happened just now? Are your glider parts?"

Cheng Chumo smiled mysteriously: "Your Highness, this is not a part on the plane, but a gunpowder jar!"

"What?" Yu Zhigan was shocked. The gunpowder jar was less than 100 meters away from the emperor. Is this guy Cheng Chumo crazy?

"Your Highness, don't panic. That's a metaphor. The one who throws it off is a stone, but it can be regarded as a gunpowder jar. Your Majesty just asked about the function of the glider. This is the function of the glider. With the glider, our soldiers can fly into the air and throw the gunpowder jar over the enemy's heads!"

Yu Zhigan heard his eyes lit up and the emperor's eyes lit up. Yu Zhigan looked at Cheng Chumo up and down. This guy is so good. He suddenly got enlightened. Tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk

"Yes, Duke Cheng gave birth to a good son!"

The emperor also praised Cheng Yaojin's face and smiled like a lot. Over the years, Cheng Yaojin was worried about Cheng Chumo. Now Cheng Chumo finally had a little success and his slap fell directly on Cheng Chumo's head: "Don't be proud, learn from the prince!"

"What my father taught me is!"

The glider finally hovered in the air for about two minutes, and finally fell slowly into the lake. Wu Shimo was not discouraged: "Your Majesty, because the power of the glider is wind, the glider cannot stay in the air for too long. Now the students are preparing to add a power system to the glider, and maybe they can stay in the sky for a long time in the future!"

"Good, come on!"

That being said, for many people who saw someone flying in the sky for the first time, this visual impact was too great. They saw with their own eyes that someone got into the glider and then flew around in the air. This is something that only gods can do in mythological stories.

After praising Cheng Chumo for some time, Yu Zhigan took the emperor to a large open space. On the open space, a bamboo basket was placed on the ground with many ropes tied to the edge, and there was a huge fire gauze in front. To put it bluntly, this fire gauze was asbestos cloth. This thing was found everywhere in the Yu Tang Empire. Yu Zhigan found it without any effort. After improving it slightly, it has temporarily become the main material for hot air balloons. Of course, it is just the material for the fire ring. Asbestos is a bit heavy, and all of them are made of asbestos and can basically not fly.

"Is this a hot air balloon? Can it fly to the sky?"

The emperor looked at the hot air balloon in front of him and felt a little unbelievable. After all, it was just a bamboo basket and a piece of cloth. If you want to say that flying in the sky, the emperor would not believe it.

"Father, wait a moment, the hot air balloon can indeed fly into the sky!" Yu Zhi said with a dry smile, and at the same time he began to get busy quickly. Compared to the glider, this hot air balloon is much more troublesome. First of all, it is necessary to make the ball bulge. After Yu Zhi fucked, he saw some students opening the bag mouth, while some were holding the blower on their feet, constantly filling the air inside.

The hot air balloon began to expand slowly at a speed visible to the naked eye. Soon, the hot air balloon that was very dry like a piece of cloth began to expand, and finally began to float towards the sky little by little. After seeing this, the emperor roughly understood what the hot air balloon was about.

"Father, wait for a while before this hot air balloon can be launched!"

The emperor nodded: "Is this a large Zhuge Lantern?"

Yu Zhigan was stunned for a moment, and then he understood that Zhuge Liang became a minister of the previous dynasty. There was also a lie-long in the Three Kingdoms era, but it was called Zhuge An. He invented this kind of lantern that could fly, which was called Zhuge Lantern by later generations.

"Yes, my father is the big Zhuge Lantern, but there are still some differences in the middle, such as this fire-breathing device!"

Yu Zhigan doesn't know much about hot air balloons, but he just said a general idea, but he didn't expect that these little guys could actually tinker with hot air balloons. Yu Zhigan felt very magical.

Soon the hot air balloon was completely inflated, and with the bamboo basket below, it flew into the air. Several thick ropes pulled the hot air balloon and prevented him from flying away. The emperor looked at the hot air balloon in front of him with a blazing light bursting out from his eyes, looking at Yu Zhigan: "Can you fly this way? How high can you fly?"

Yu Zhigan thought for a moment, and finally shook his head. He didn't know how high he flew, but he must be much higher than the glider!"

“How to land?”

This question asked Yu Zhigan, who really didn't know how to land, so he could only bring Lu Su and others who were responsible for studying hot air balloons over.

“How does this hot air balloon land?”

Lu Su first respectfully saluted the emperor, and then slowly spoke: "Go back to Your Highness, this hot air balloon landing means closing the fire spitting valve and slowly letting the hot air balloon land. We have conducted several tests and can all land safely. Please rest assured by Your Majesty and Your Highness."

Don't worry, don't worry, Yu Zhigan is very clear in his heart. Before the inert gas was studied, the hot air balloon was not a safe thing and could explode at any time. Anyway, Yu Zhigan dared not ride this thing casually. Do you know if it will be gone while flying!

"Your Majesty, the hot air balloon is ready and can take off at any time!" After receiving the signal, Lu Su saluted again respectfully.
Chapter completed!