A circle of hard horns grew obliquely back from the head of the Yan Dragon, like an explosive head that was furious, and from the point of view of appearance, there was a kind of fierce domineering.

The horn is made of bone and is very hard, but functionally speaking, it is not used to hit people - it has a forward one on the bridge of its nose, and that one is used to hit people.

The horns grow diagonally backwards and are very aerodynamic, and they are designed to adapt themselves to ultra-high-speed flight.

Ah Xu, Haruga, and Kotomi rode behind Yanlong's head, and these horns were just enough to shelter from the wind. And Yanlong's collar was also hung in this place, and Kotomi directly used alchemy to refine a row of seats with seat belts on the collar, and the SOS regiment's luxury mount was born.

After having the Yan Dragon, the two poor wyverns were released by Haruhi, and after Kotomi removed the saddle and armor equipped on the two wyverns, the two wyverns who had regained their freedom flew away happily.

"Rose, hurry up and fly! Hurry up! Haruhi Suzumiya urged Yanlong loudly, she was not in a hurry to go back, but wanted to experience the excitement of supersonic flight.

Ross flapped his wings vigorously, and Kotomi calculated in her mind for a long time, and finally expressed her doubts: "Inciting the wings relies on the reverse thrust of the air to convert into its own velocity, and the effect of the force is mutual, even in an ideal state, unless it can fan the force that reaches supersonic speed, it can get supersonic reverse thrust." The world constants of this world are basically the same as ours, and Rose's power is far from enough to allow it to break through the sound barrier. ”

Ross was able to reach speeds of more than 700 kilometers per hour on his wings, much faster than the Wyvern, but he was still a distance beyond supersonic speed - because if he wanted to go any faster, he would encounter a sound barrier.

In the front part of the Yanlong, which is flying at high speed, the air is compressed due to the generation of local shock waves, and the drag increases sharply. Rose's physical strength allows him to handle the sound impediment. But his strength seems to be unattainable—if the power of his wings can reach the level of breaking through the sound barrier, that is, every movement of his can break through the sound barrier, and the air waves driven by this force alone are a huge threat, and it is impossible for Ah Xu to catch it so easily.

Dragons' magic?

Ah Xu naturally thought of this aspect, a dragon who can't do magic is not a good dragon.

"I can't fly fast, I'm running out of water." Rose's voice came.

"Does Yanlong still use a magic potion to sustain his life?" Ah Xuan complained.

"I don't know magic, what do I need a magic potion for?" Rose said inexplicably, there are magic potions in this world, but they are used by magicians, and it has nothing to do with it.

"Can't magic? And what about your Spitfire? Haruhi Suzumiya was surprised.

"The water is running out. Can't spray. Ross said.

“…… Does a spitfire need water? What kind of water are you drinking? Gasoline? Didn't refuel, so no motivation? Ah Xuan complained.

Ross was distracted for a few seconds, still searching for what gasoline was in the flood of information that had been poured into his brain, and when he figured it out, he replied, "It's not that thing, it's water, ordinary water, the water that can be drunk everywhere in nature." We, Yanlong, can breathe fire only after drinking water. to be able to enter the overspeeding flight state. ”

"Is water your spinach?" Yanlong's explanation made Ah Xuan even more strange, according to countless stories, the fire-breathing dragons were all restrained by water, but Ross meant. It seems that he can't even breathe fire out of the water.

"Spinach? That thing is so bad that you should never mention it to me. "There seems to be something similar to spinach in this world, and Rose has eaten it and had a few days of diarrhea. It's a lifetime of psychological shadows.

"There's a lake over there." Kotomi pointed in one direction and said to Ah Xu.

Rose flew over and landed on the edge of the lake, scared away by the animals around him. There were also a few squirrel-like creatures that didn't have time to run, lying on the ground and pretending to be dead.

I don't know what the difference between the "water" that Ross drinks and the water that Ah Xu knows, so I first find the water in this world and let Ross drink it.

The lake was not very large, and Rose lay on the shore and poked his mouth into the water, and the surface of the water dropped rapidly at a speed visible to the naked eye, until he was full, and then Rose smacked his mouth and raised his head in satisfaction.

Ah Xu has been testing Rose's body and found that his own consumption of water is very low, don't look at him as big, but his consumption of water is much lower than that of Youxi, who eats the least.

The water that enters its body is stored directly in an organ, like the hump of a camel.

Haruhi Suzumiya asked Kotomi to get three sausages, then inserted them in the fork, holding a fork more than three meters long with heat-insulating gloves, and shouted to Rose: "Come, help me take the test!" ”

Rose adjusted his angle to the three sausages at the top of the fork and spat out a small flame.

The sausage was gone, the tip of the fork was half shortened, and the reddened iron slurry dripped on the wet grass, giving off a scorching smell and a small flame.

Kasuga throws a fork into the water, and a large amount of water vapor immediately rises from the surface of the water.

“…… Such a high temperature? "I thought that Yanlong could be used to hold a barbecue meeting in the future, but I didn't expect the flame spewed out by Yanlong to be so hot that it directly burned the sausages, and even the steel could be burned.

"Hydrogen burns, of course the temperature is high." After Ah Xuan figured out the principle of Yan Long's body, he was amazed, and he explained, "Yan Long has an organ in his body that can store water. His body can generate an electric current to electrolyze water to produce hydrogen and oxygen, which is then exhaled through an organ in his lungs, and the temperature in Yanlong's body is extremely high, and the temperature of that organ seems to be as high as about 600 degrees. In a high-temperature environment, hydrogen and oxygen are combined, and the gas exhaled is combusted—this is the principle of Yanlong's breath. Because it contains impurities, the exhaled gas is also combined with the surrounding air, and it is not a pure oxygen environment, so the color is not light blue...... If you pay attention, you can see that the color of the flame on the side of Yanlong's mouth is light blue, and the temperature there is the highest, as high as about 3000 degrees, not to mention steel, even gold can boil for you. ”

Real gold is not afraid of fire, just because the temperature of the flame is not high enough.

Ross didn't understand what Ah Xuan was saying at all, only that he seemed to be talking about why he was breathing fire...... Yanlong is born to breathe fire, is there any other reason?

Kasuga was a little disappointed - why wasn't it a magical dragon?

"So, it should belong to the Electric Dragon, not the Flame Dragon, right?" Relying on the bioelectricity in one's own body to electrolyze water to generate hydrogen and oxygen, and spit it out for combustion reaction, no matter how you look at it, "electricity" has a great effect.

"I'm Yanlong!"

Rose flicked his tail, and the forest behind him shook as if it had been ravaged by a tornado.

For its own bloodline, it will never waver! (To be continued......)