Coming back from Wei Zheng's mansion, Li Hao drove the RV out again and headed to Nantuo Mountain, Li Hao and Lu Yun sat in the cab, Feiying and other special forces stood in the carriage, with a sense of déjà vu of a bus.

In order to avoid fatigue driving, Li Hao and Lu Yun took turns driving, Lu Yun's driving skills were good, and this road was a wide cement road, how smooth and smooth it was.

They didn't drive very fast, they arrived at Nantuo Mountain at more than three o'clock in the morning, and the cement road led to the bottom of the space-time tunnel, looking at the cement road leading to the mountain, Li Hao was worried for a while: "This cement road leads directly to the time tunnel, there will definitely be people who follow the road to get there, and the mobile phone sent by my brother is afraid that it has already been picked up." ”

With apprehension, Li Hao finally drove the RV to the end of the cement road, which stretched all the way to the col.

Li Hao got out of the car to check it, and was pleasantly surprised to find that there was an iron box for desserts on the ground, which obviously did not belong to this era.

"It's still there." Seeing this, Li Hao hurriedly stepped forward to pick it up and muttered to himself, "Also, there is no one living here for sixty or seventy miles, how can anyone come, I don't know if the master is in the Taoist temple......"

While speaking, he shook the iron box in his hand, feeling that there was something inside, Li Hao opened the lid of the box, and saw a whole set of brand new mobile phones, covered with a layer of waterproof plastic film.

"Wow, PV phone?" Li Hao took the legendary high-tech in his hand and looked at it carefully, and found that the mobile phone was so thin, sure enough, the more developed the technology, the better the mobile phone, but Li Hao looked for a long time and did not find the photoreceptor, since it is a photovoltaic mobile phone, it is to absorb solar energy to charge, naturally there must be a photosensitive plate, but Li Hao could not find the photosensitive plate.

Li Hao took this new mobile phone to the car, studied it carefully, and finally succeeded in booting, and then entered the mobile phone interface, fortunately, the operating system is similar to the previous operating system, the changes are not very big, Li Hao can basically use it, use this mobile phone to call his own phone, actually dialed, it seems that there is a card in this new mobile phone, he immediately wrote down the phone number.

Send a message to Li Cheng, Li Cheng said that he was busy and had no time to chat, and he would talk again tomorrow, Li Hao knew that he must be running around preparing those things for himself.

Li Hao opened the door and asked all the special forces to get out of the car and walk, breathe, it was too stuffy in the carriage.

As he walked, someone suddenly exclaimed in the distance: "Lord Wang, there's a strange thing here!" ”

Li Hao hurried over when he heard this, only to see that it was a helicopter, no wonder it was a strange thing, this helicopter fell from a branch at some point, bad luck, his face hit the ground first, the cab was broken, and after several years of wind and rain erosion, it has been dilapidated.

Li Hao circled around the helicopter for a long time, and suddenly thought: "The engine of this helicopter should not be broken, dismantling this engine and sending it to Cheng Qingyun can make the internal combustion engine appear decades in advance." ”

As soon as he thought of this, Li Hao couldn't hold back such a thought, and immediately went back to the car and took out the large toolbox to disassemble the helicopter's engine.

It's not easy to dismantle the engine of a helicopter, but if you don't care about the integrity of other components, it's simple, and you can use an axe and hammer to smash it if you can't get it, as long as it doesn't hurt the engine.

With the help of everyone, it took Li Hao nearly four hours to remove the engine, good guy, big and heavy, fortunately Li Hao's carriage is very large, just enough to put this engine in.

Next, it was a boring wait, Li Hao went to Jingyunguan to take a look, and found that no one had lived here for a long time, and the furniture on the ground was full of dust, and it seemed that Zhiyuan Zhenren had not returned.

Finally, another day passed, and in the early morning, Li Cheng's news came: "Everything is ready, I am rushing to my destination." ”

Li Hao replied: "Received, I'm already waiting." ”

After waiting for a long time, when it was almost noon, Li Cheng's message came again: "I've started throwing things!" ”

Li Hao replied with one word: "Okay!" Then he looked up at the sky with the others.

After waiting for about three minutes, a black object appeared very suddenly in the sky hundreds of meters high, at first it was very small, and it became bigger and bigger, as if it was drilled out of something, it turned out to be an aluminum alloy box, after the aluminum alloy box appeared in the air, it was like a leaf, swaying from side to side, floating down, falling very slowly, as if there was no weight.

Immediately after that, a second aluminum box appeared, a third, a fourth......

The five big boxes all appeared in the sky and slowly fell, and Li Cheng's message came again: "There are five boxes in total, have you received them?" ”

"Roger." Li Hao replied to the message, and then waited patiently for the boxes to fall.

After the box fell, Li Hao stepped forward to open the password lock to check whether the items in the box were damaged, and the five boxes were checked, and nothing was damaged, Li Hao got up and waved his hand, and said, "All move to the car!" ”

All the special forces stepped forward to lift the boxes and carry them to the RV.

There are five more big boxes in the car, and the space for the special forces is a little small, everyone squeezes it, and it can still be stuffed, Li Hao sent a message to Li Cheng: "Brother, I have an urgent matter, I have to drive to Chang'an, and I will talk about it when I have time in the future." ”

Li Cheng replied: "Okay, you must keep in touch, don't let me and my parents worry." ”

"Hmm!" After Li Hao replied to this message, he drove around and drove to Chang'an.

The RV is electrically driven, and it can drive up to more than 100 yards, but Li Hao is worried that it will not be good for the motor, and the fastest speed all the way is only sixty or seventy yards, which is about equal to flying in ancient times.

That night, they arrived in Chang'an, but now it was dark, the gate of Chang'an had long been closed, Li Hao first drove the car to the scientific research institute in Lantian, and handed over the engine of the helicopter to Cheng Qingyun, the engine of the helicopter belongs to the aviation piston engine, burning aviation gasoline, and the general car engine works on the same principle, but the power is relatively large, and the weight is lighter.

The reason why Li Hao wanted to dismantle the engine of this helicopter was to use this engine as a sample and study that the fuel engine, no matter what kind of oil it burns, is more powerful than the steam engine, and although the appearance of the steam engine is of epoch-making significance, its power is really not high.

When Cheng Qingyun saw the engine on the ground, Li Hao smiled and said, "Qingyun, guess what this thing is." ”

Cheng Qingyun circled around the engine twice and muttered, "This is a kind of machinery. ”

Li Hao nodded and said, "That's right, it's a machine, can you guess the role of this machine?" ”

Cheng Qingyun squatted down and stared at the engine carefully for a long time, and found that this machine was extremely complicated, and it was dazzling, but he was the one who invented the steam engine, and he still had a deep understanding of the machine, especially the function of some parts, which he could see at a glance, so after looking at it for a long time, he got up and looked at Li Hao and asked, "Teacher, shouldn't this be the same as the steam engine, a power machine?" ”

Li Hao looked at him in surprise when he heard this, stretched out his hand and patted him on the shoulder, and said, "Sure enough, it's a professional, you can see it at a glance, that's right, this is a power machine, and the power is much higher than that of a steam engine." ”

"Hmm!" Cheng Qingyun looked at this engine excitedly and asked Li Hao, "Teacher, how much do you know about this power machinery?" Can you tell me about it? ”

Li Hao smiled and said: "This thing, called a fuel engine, also known as a ignition internal combustion engine, is to generate internal energy by burning oil, and then convert it into mechanical energy. ”

"Hmm." Cheng Qingyun took out a pen and paper with him to record Li Hao's words, raised his head and asked, "Teacher, can you use any kind of oil for this fuel engine?" ”

"Of course not." Li Hao shook his head and said, "This thing has very high requirements for oil, and it must be oil refined from oil." ”

Cheng Qingyun said: "We have also refined oil according to your instructions and obtained different types of oil, which kind of oil do you refer to, teacher?" ”

"This ...... It's up to you to figure it out slowly. Li Hao said, "There are different types of fuel engines, some can burn diesel, some can burn gasoline, what are the differences between gasoline and diesel, I haven't studied it carefully, this really depends on you." ”

"Okay, thank you, teacher." Cheng Qingyun said, "Teacher, I will study this internal combustion engine carefully, and it will be five years at the fastest and ten years at the slow, and I will definitely be able to build you a car powered by a fuel engine." ”

"Well, I believe in you for the teacher." Li Hao smiled and nodded, and patted Cheng Qingyun's shoulder vigorously again, "You are the father of science and technology in my Datang!" ”