Qin Mu was the first to get up and come to him, haha laughed.

"Enough temperature! Iron ore is reduced to molten iron! ”

The others also came over to look at the red molten iron, their eyes full of curiosity.

"What are you doing! Catch it! ”

"Xiaoqing! Get ready to take notes! ”

The hot iron water continued to flow out, and Qin Mu divided it into six cylinders of molten iron, which were increased and reduced by oxygen according to the incremental method.

After a busy night's work, six long steel plates were placed on the table.

Qin Mu held a hammer in his hand and fixed all the steel plates.

"The first piece." Qin Mu smashed it with all his might.

I heard a crisp sound as the iron bar broke.

Uncle Zhang stroked his beard, it was the first time he had seen such an iron measurement.

"It's hard enough, and it's good to use it as a machete."

"The carbon content is too high, and the number one is invalid."

Qin Mu came to No. 2 and smashed it hard, the first hammer did not react but bent slightly, shaking his arm numb.

"Old Wu, come on!"

Wu Zhengji picked up the hammer and smashed it, and with a ding dong, the iron bar was still broken.

I tried the fourth one after another, and it was still intact after withstanding seven or eight hammers, and there was a slight bend.

After the six trials, Qin Mu analyzed it.

"The blowing time of the bellows between the fourth and fifth and the number of stirring times are listed, and another batch is built according to this ratio."

Xiaoqing recorded everything carefully.

"Take two numbers before and after the median value to create three samples."

Uncle Zhang nodded while watching, admiring Qin Mu's optimal screening method in his heart.

The steel that Qin Mu found had a lot of black dots, which were the toner left by the charcoal, and the whole steel was black, and the color did not look very good.

In the end, coal is still needed to refine coking coal to better restore high-purity steel.

Qin Mu turned around and saw that everyone was already exhausted, so let them rest here on the spot, go back tomorrow morning to catch up on sleep, and wait until tomorrow afternoon to continue working.

Qin Mu and a few people came to the top of the carriage and made a bed to lie on it.

Xiaoqing and Ruoqin were counting the stars on the side, Qin Mu's heart was very confused, thinking about how to retaliate against Xue Huaiyi, and on the other hand, thinking about tomorrow's test flight experiment.

Wu Zhengji suddenly asked, "Qin Mu, how do you think you have been preoccupied today?" ”

"I'm going to kill Xue Huaiyi, and I'm going to risk my life to fly tomorrow, do you think I can be happy?"

Qin Mu said in the calmest tone.

Qin Mu turned around to look and found that Xiaoqing and Ruoqin were staring at him without saying a word.

"It's okay, I can handle all this, since we are doing things together, I won't hide these from you."

"Why don't I help you kill Xue Huaiyi?" Wu Zhengji said in a serious tone.

"Old Wu, simply killing him will only lead to burning, don't do stupid things and affect all of us."

"Well, you're right, Xue Huaiyi is the face of the Empress Wu, he is a pampered and arrogant person, bullying and dominating the market for many years, to be honest, I had to take a detour when I saw him when I was on an errand."

"He is a monk, three roots are not clear, six roots are not clean, he is a complete little white face, the highest level of eating soft rice, and then you will send someone to inquire about his private life to see how he is."

"Well, I'm going to contact the bad guys in the past and ask them to find out some news, as long as the money is enough, they dare to do anything."

"I know something about Xue Huaiyi." Ruoqin said suddenly.

Qin Mu got up suddenly, "Say it quickly." ”

"Xue Huaiyi likes Empress Wu very much, whenever Empress Wu pampered others, he would think of giving that person to wear small shoes and do bad things in the field."

"Yo Roar is still a vinegar jar! In other words, does the Empress Wu really have that much charm? ”

"I don't know about that."

Qin Mu showed a weird smile, looked at Ruoqin, and then lay down.

Ruoqin's casual words revealed that her identity was not simple, and he could know that these were actually very abnormal, but Qin Mu didn't plan to investigate them deeply.

"Brother Qin, are you going to fly tomorrow? How to fly? Xiaoqing asked.

"It's flying in the sky."

"Wouldn't that be able to pick up stars!" Xiaoqing's eyes lit up and said.

"Yes, as long as you fly high enough, don't talk about picking stars and moons, I'll pick one for you the day after tomorrow."

"Okay, okay!"

The next day, Qin Mu put his bicycle into the carriage and came to the Longmen Mountain Manufacturing Workshop in order to hide people's eyes.

In the huge courtyard, various parts of the phoenix are placed, and the craftsmen are putting the finishing touches on it.

Qin Mu came to the hot air balloon placement area.

The balloon is made of three layers of light silk cloth and brushed with a thin layer of paste to seal it. Qin Mu has improved the basket part, and the stove adopts a semi-dense multi-furnace type, which can bear the weight of more than a dozen people, and the house with a height of five meters and twenty square meters is even larger.

Qin Mu took out the bicycle and instantly attracted everyone's attention.

Shangguan Wan'er walked over slowly at this time, "What is this?" ”

"According to Datang, he is an iron horse who doesn't eat grass."

"Could it be a wooden cow and a flowing horse?"

"Don't ask, I'm going to tear it down now.

Over there, tie the reins and check again! ”

Qin Mu took out the tool kit, took out a wrench to remove the front wheels and fix them in the big basket, and used the bicycle to drive the bellows to control the amount of fire to control the ascent and landing.

Shangguan Wan'er watched quietly from the side, wanting to help but not knowing where to start.

"Why is this cloth blue?"

Qin Mu twisted his wrench, "The sky is blue, so ah, this hot air balloon, including this big wooden basket, is all blue, it can be integrated with the sky, and it is almost impossible to see the flaws from a distance, after all, everyone's eyes will be on the phoenix." ”

The moment of the phoenix's flame-like golden light attracts people's attention, and a few hundred meters above the ground, the phoenix's body will also block the hot air balloon.

Preparing everything, Qin Mu beckoned people, moved all the parts and materials of the hot air balloon to the top of Longmen Mountain, and then assembled them.

Coming to the top of the mountain, Qin Mu sent people to pull the entire hot air balloon up to the treetops with ropes and support it, so that the burning hot carbon dioxide could enter the balloon.

Everything was ready, and Qin Mu lit the nine stoves.

The charcoal was burning in the furnace, Qin Mu was riding a bicycle in a big basket, the simple bellows were operating, the fire was getting stronger and stronger, and after ten minutes, the hot air balloon was propped up into the shape of a water droplet.

The rope was getting tighter and tighter, and the treetops were snapping.

"Everyone, listen to my orders and continue to pull the rope!"

Shangguan Wan'er's eyes were full of shock and shock, and she now understood that this was the same principle as Kong Ming's lantern.

"Can I go up?"

Qin Muduan sat on the bicycle and looked around, "You better not go, if this thing doesn't go well, if something goes wrong, there will be no corpse." Longmen Mountain is also hundreds of meters high, and if something goes wrong with the hot air balloon, then I will fall into the mud. ”

"Aren't you afraid?"

"Of course I'm afraid, but I have to do it, and the pioneers naturally have to experience it firsthand to be able to progress." Qin Mu said freely.

Shangguan Wan'er jumped in one by one, "If you die, the mission will not be completed, and I must experience it myself to judge its feasibility." ”

I didn't expect Shangguan Wan'er's consciousness to be so great, Qin Mu thought in his heart.

Qin Mu pedaled the bicycle hard, and the balloon became more and more inflated.

"Good! All ropes are loosened! ”

More than a dozen people around sent the rope away, and the rope was instantly dragged away.

The hot air balloon was suspended by several tens of centimeters.

Qin Mu rode quietly, focusing on the treetops.

"Why don't you fly?" Shangguan Wan'er asked.

"I'm waiting..."

"What are you waiting for?" Shangguan Wan'er followed Qin Mu's gaze and looked into the distance.

I saw the treetops sloping towards them.

Qin Mu pedaled the bicycle frantically, and the fire suddenly rose, spewing out a pillar of fire more than one meter high.

The hot air balloon was pushed to the side of the mountain, and after a while it left its upper body, looking like a corner of the verdant mountain was missing from a distance.

The craftsmen who were resting with them stood up and looked at the hot air balloons that were gradually moving away, and what they didn't dare to think was that the things they had worked overtime this week could really fly.

The hot air balloon slowly floated away from Longmen Mountain, Shangguan Wan'er looked out a little foggy, and slowly moved to the edge of the basket step by step, looking at a height of several hundred meters below the woods like a green meadow, and the houses below were not as big as a palm.

"How? Is it good-looking? Qin Mu asked.

"Well, it's good."

"Then why don't you come and help me ride for a while..."Qin Mu said sweating profusely.

"I... I won't! ”

Qin Mu got up and pushed her to sit on the bicycle, "Put your feet up, and then stare at it." ”

Shangguan Wan'er did so, the wheels turned, and she looked at Qin Mu with a smile, "It's so simple!" ”

"That's nature, you ride at a constant speed, just keep it."

Qin Mu picked up a shovel and shoveled a few shovels of charcoal from the barrel into the stove, then picked up his mobile phone and began to record data.

The speed of a hot air balloon is about the same as that of a cable car.

Since the stove is fixed and the load-bearing sandbags can only control the direction slightly, the most critical thing is to rely on the wind direction, so the wind direction of the day must be due northerly, and the left and right directions are controlled by the change of the weight of the sandbags.

Qin Mu's step-by-step experimental hot air balloon unknowingly flew into the sky above Ziwei City.

"Talented, Li Yan, is it accurate for him to look at the stars and see the weather?"

Shangguan Wan'er came back to her senses, "I know very accurately, at least the whole Luoyang is enough." ”

Qin Mu leaned at the railing, "That's okay, hey, that's Mingtang, right?" ”

"Well, it's almost finished."

"This Mingtang has the reputation of Vientiane Shrine, but it's a pity that there is no slag left."

"You're saying someone will burn down the Ming Hall? Who is so bold? Shangguan Wan'er asked puzzled.

"Of course it's Xue Huaiyi! The vinegar jar is poured, and nothing can be done. Besides, this kind of building that costs people and money will be burned if it burns, so what is it bad to do with this money? ”

"Imperial power is like this, try to show it, and in the end it is all in ashes." Shangguan Wan'er sighed.

"I didn't expect Lord Shangguan to have such a high opinion, you said that this is also strange, all dynasties can read the history of the previous dynasty, but they will never learn any lessons from it, but they will jump into it one pit after another, and in the end, they will all end up ruined and disappear in the long river of history."

Shangguan Wan'er felt that what Qin Mu said was very reasonable, so she expressed her opinion, "The summary is one word, greed." Greedy for money, greedy for power. ”

"No, no, no, this is the inferior nature of human beings, the inevitable trend of historical development, and has nothing to do with social structure and ideology." Qin Mu opened his arms and felt the breeze on his face, "Shangguan Wan'er, do you believe it?" ”

"Believe what?"

"Believe that I can bring endless prosperity to Datang!"

Shangguan Wan'er smiled slightly, with excitement in her heart, she didn't answer Qin Mu, in her heart she felt that Qin Mu was not as bad as she appeared.

The hot air balloon floated in the air for a few hours before landing perfectly at the designated location.

Two teams of people are already on standby next to the hot air balloon.

Shangguan Wan'er regained her composure, with a hint of blush on her face.

"Take this away and take it back to Longmen Mountain."

"No!"