Facts have proved that Zhang Nan still underestimated the wisdom of the ancients too much.

Ancient China has never lacked talented people, whether it is scientific research and technology, or political system, or cultural connotation, ancient China is definitely one of the world's leaders.

The ancients have never lacked the spirit of study, what they lack may just be an idea, otherwise it will not be explained, and now it appears in front of Zhang Nan, the guy who is suspected of being a steam train.

Originally, Zhang Nan's heart thought very clearly, as long as Momen figured out the working principle of the steam engine and could start to learn to use it in machinery, then Zhang Nan would be able to justifiably run to Li Er and ask Li Er for an identity, but what Zhang Nan didn't expect was that he still underestimated Momen's creativity.

Under the leadership of Ah Da, Zhang Nan once again entered the place where he had kidnapped himself for a few days.

It didn't take much effort for Zhang Nan to see Mo Zu, but before Zhang Nan could speak first, Mo Zu looked mysterious and pulled Zhang Nan directly into the room.

"Qingquan, the old man has a treasure to show you." Mo Zu's face was excited, and as he spoke, his beard shook and shook.

When Zhang Nan heard this, he suddenly felt a chill in his body, could it be that Mozu wanted to take himself to see the goldfish?

Of course, this is just Zhang Nan's own inner drama, where would Mo Zu understand so much.

So Zhang Nan asked: "What baby, can this treasure have the steam engine baby I gave you?" ”

Mo Zu smiled and said, "You go and see, don't you know?" ”

Zhang Nan looked strange, but he still followed Mozu to see Mozu's treasure.

This is the opening scene, Zhang Nan was shocked and speechless in the face of the thing that seemed to be a neat train.

"Mozu, is this thing really made by Momen?" Zhang Nan was still very shocked, after all, this was too advanced, and it was not a little bit ahead, and this matter had nothing to do with him, he just provided a model of a steam engine.

"This is naturally made by Momen, otherwise who else can it be, since you went back to Qingquan, you handed over the model of the steam engine to the old man, but the old man gathered many of our Momen masters, and after studying it for several days, he finally realized the truth." Mo Zu said proudly.

"But although the old man has already understood the principle of the steam engine, what I admire even more is that you can cross the family door, and it is unbelievable that you can think of such a method." Mozu Road.

"It's amazing that you're you, right?" Zhang Nan complained fiercely in his heart.

"No, how the hell did you come up with this thing?" Zhang Nan is still very curious, after all, this is an epoch-making product, and Zhang Nan didn't expect it to be applied so quickly.

"This, this is thanks to Qingquan you, last time you said that there is a kind of ingenuity that can move by itself without relying on livestock, but the old man has it in mind, and now this thing can move without livestock, although this thing does not run fast, and it can't pull too heavy goods, but it can indeed move by itself." Mozu Road.

"Dare to ask Mozu, what is burned here." Zhang Nan asked.

This is not enough power, and it is likely that the fuel is not being used correctly.

"In here, branches, weeds, rotten cloths, anyway, everything that can be burned is thrown into it, but I still can't run fast, so I wonder if I can properly lighten the things in the back, so that I can run faster." Mozu Road.

"This thing must not be able to run fast if it burns these. The steam engine is a reciprocating power machine that uses the energy of steam, and you can't guarantee the stability of its steam when you use these fast-burning things, so it's normal to not run fast, has Mozu ever thought about changing something to burn? Zhang Nan asked.

"Well, I've tried everything I could." Mo Zu also scratched his head and said.

"Coal." Zhang Nan said.

"Coal?" Mo Zu was strange this time. "What is coal?"

Zhang Nan had seen coal in the Tang Dynasty, and in the Western Han Dynasty, China had already begun to mine coal and use coal as fuel.

"Just that black guy, the same as charcoal." Zhang Nan knew that it was just a different name.

"Oh, you said it was charcoal, and the old man tried it, but it didn't work very well." Mozu Road.

"Not how? Impossible. This time it was Zhang Nan's turn to wonder, this steam engine has always used coal as raw materials, how could it not work?

"There must be something wrong with your machine, and there is absolutely no problem with using coal." Zhang Nan said with great certainty.

"This ......" Mo Zu couldn't finish his words when he was interrupted by a female voice.

"Whose Karakuri do you say has a problem?"

Zhang Nan turned his head and found that Qing'er was looking at him angrily, as if he had been insulted by something.

Zhang Nan didn't get angry when she saw that it was Qing'er, after all, Qing'er was also a very cute girl in Zhang Nan's eyes.

So Zhang Nan smiled and said: "I said Qing'er, if you do something wrong, you have to admit it, I will definitely not be wrong, it is definitely your machine's problem." ”

"No way, there can't be a problem with my Karakuri. Also, don't call me my sister. The woman said angrily.

"Your sister?!" Zhang Nan was shocked, why are they twins again? But this also looks too similar, it's just a mold poured out.

"That's right, I'm my sister, and Qing'er is my sister, so don't call me wrong." The woman said.

"Okay, then what's your name." Zhang Nan asked speechlessly.

"Bai'er." The woman said.

"......" Zhang Nan felt a flock of small crows flying above his head.

"Who gave your sisters their names?" Zhang Nan asked, this person must have watched "The Legend of the White Snake".

"Old man, me." At this time, Mo Zu jumped out and angrily brushed a wave of presence.

"Dare to ask Mo Zu, can you always be called Xu Xian?" Zhang Nan asked cautiously.

"Old man, my surname is really Xu, Qingquan, how do you know." Mo Zu was shocked.

"I know your sister." Zhang Nan had a feeling that he was about to collapse.

"You still know I have a sister!" Mo Zu was even more shocked.

“……”

Zhang Nan really didn't want to talk anymore, he was so tired.

"Okay, let's get down to business, it must be this Karakuri problem, if you don't believe it, you turn it on, and I will definitely be able to find the problem for you." Zhang Nan said.

"It's open, but what if it weren't for my ingenuity?" Bai'er asked.

"If it's not your problem, then I'll help you cure your eye disease." As soon as Zhang Nan's words came out, Mozu and Bai'er were shocked.