"Of course I do! Who made this out! That's what I wanted to do before! Xiao Han excitedly grabbed Master Cao's book, and sprayed all the stars on his face!

"This is my ......" Master Cao, who was grabbed by Xiao Han, was about to speak, but stopped at the last second!

coughed before saying, "Ahem... It's my friend, well, my friend did! That's the people I had to arrange for last time......"

"You're talking about them?"

Xiao Han pointed at the black brothers who were carrying coal in disbelief, and his mouth was so open that he could stuff it into a fist!

"That's not it, these people are just some late-born juniors, how can they not let people do this, it's too bad, they are now estimated to be studying waterwheels by the river."

"What? The watermill also got out?! Why didn't you inform me of such a big thing! Walk! Hurry up and show me around! ”

Master Cao was pushed out by Xiao Han like a dung cart, and his mood was simply crying and laughing, who didn't inform him? It's obvious that I'm too lazy to patronize and play every day, good guy, when it comes to the end, it's my own head to blame!

But no matter what, who calls someone a Hou Ye and the Lord? Bear with me!

Out of the door, hurriedly took the cart to the downstream of the river, Xiao Han saw on the cart that the original wide river channel had been blocked by an earthen river dam at some point, and the gentle river passed here, and as soon as it was stopped by the earthen dam, the water flow immediately became much more turbulent! And under the dam, there are three or four large and small waterwheels!

"That's what you've been doing these days? So fast? Xiao Han swallowed a mouthful of saliva with difficulty, and without waiting for the cart to stop, he jumped down first and ran quickly to the waterwheel.

In the early spring, the river is still carrying a trace of ice, washing on the tall waterwheel made of logs, and the large waterwheel that is more than two feet high is rotating unhurriedly, and at its edge, there are still many bamboo pipes tied.

With every rotation of the waterwheel, the bamboo pipes immersed in the river water were filled, and when they turned to the highest place, they were dumped out again, although they were all poured into the river now, but Xiao Han knew that as long as a few bamboo pipes were connected, these river water could be automatically transported to the dry plain! At that time, the dryland can be turned into paddy fields!

After seeing this waterwheel, Xiao Han looked greedily at the smaller waterwheel next to it, perhaps because of the low resistance, it turned much faster than the big one!

Of course, in terms of volume alone, it will not make Xiao Han so out of shape at all! What really surprised him: this waterwheel, it was connected with gears!

Xiao Han dared to swear to the sky! He really saw the gears! Although they are still rough and made of wood, they turn one by one, and the teeth are interlocking, what is this not a gear?!

Xiao Han was dumbfounded, but Master Cao bowed slightly and said something to an old man who walked over by the river.

The old man's hair was all white, his face was wrinkled, and his back was also on his back, but only a pair of eyes were extremely clear, and when he looked at Xiao Han, there was a strange light flashing.

"Lao Cao, Lao Cao...... I'm a little dizzy, who did this? A burst of water vapor hit, waking up Xiao Han in a chaotic state, wiping the moisture on his face, Xiao Han opened his throat and shouted Master Cao!

He couldn't believe what he was seeing! In Xiao Han's consciousness, if someone can complete all this in just a few days, then he must not be human!

Hearing Xiao Han's shout, Master Cao confessed to the old man, and quickly came to Xiao Han and said to him: "Master Hou, this is one of my ... Well, uncle, these are all done by him in the drafting of the design! ”

"Where's my uncle? Take me to see ......" Xiao Han pulled Master Cao's book, and wanted to know if this was not human... What exactly does it look like!

It's outrageous! Even if Lu Ban is alive, he can't play like this!

Master Cao smiled and pointed to the old man not far away: "Oh, who is it!" ”

Xiao Han looked in the direction pointed by Master Cao, and saw the smiling old man.

At first glance, Xiao Han felt that this person was really different! Just looking at his face, Xiao Han couldn't even tell his age!

With wrinkles on his face and dry white hair, it is okay to say that he is sixty or seventy years old, and some people believe it when he says that he is seventy or eighty!

But those eyes, no matter how you look at them, they look like a child! Is he a rejuvenation, is he a rejuvenation?

"The younger generation Xiao Han, I have seen my father-in-law, dare to ask my father-in-law's surname?" For this strange person, Xiao Han didn't dare to put on the marquis's posture anymore, and hurriedly took out the etiquette to the elders to greet the old man.

The old man walked over and smiled mildly at Xiao Han, and then said: "Hehe, the old man has seen the Hou Ye, the old man's surname is bird, as for the name, it has not been used for too long, and I have forgotten it, the Hou Ye called me a bird!" ”

"Surname Poultry?" Xiao Han didn't know that there was this surname, and he was stunned for a moment, then he bowed down and said: "Don't dare to call me a master in front of the old man, just call me Xiao Han!" I want to ask the old bird, are all the waterwheels on the river from you? ”

Old man Hua still taught Xiao Han some after all, in the respect of the elders and the young that the ancients valued most, Xiao Han did almost perfect at this time, and it was really in vain that Old Man Hua "taught carefully".

Seeing that Xiao Han was so humble, the old man also laughed, stroked his white long beard and said, "Yes, you can also say no." ”

"What do you mean by Elder Bird?" Xiao Han was a little confused, scratching his head and asking the old man.

"Master Hou, let me explain this to you." Master Cao spoke out at the right time and explained to Xiao Han: "Actually, the waterwheel was not thought up by Master Hou, let alone by Elder Bird!" It appeared as early as the Han Dynasty, but it was not widely used at that time because of its lack of durability. Later, in the Jin Dynasty, there were already sporadic grinding discs driven by waterwheels. And now these waterwheels are all redesigned by the old bird according to the remaining drawings, otherwise who can build these things in a few days? ”

"Oh~" Listening to Master Cao's explanation, Xiao Han understood. Fortunately, it's not too outrageous! If there is really a genius who can design so many things in a few days, Xiao Han really has to consider whether this person will also be a traverser.

"Oh, yes! You told me what's wrong on the way now? What's the problem? Xiao Han looked at the whirring waterwheel, and suddenly remembered what Master Cao said before he came.

"Transmission! Now the problem is transmission! "Master Cao is about to go crazy, he has been chattering on the road for a long time, and Xiao Han didn't listen to his feelings at all......

"Transmission? Isn't there gear? What happened to the transmission? Xiao Han pointed to the gears that were still running and asked strangely.

Master Cao's eyes were almost red, and he said loudly: "The gears are there, and the bearings you make are really easy to use, but the water hammer is too big!" And it is easy to process, and it needs to be placed a little far away from the river bank, which is simply out of reach of the gears! If you add too many gears, it's easy to break, isn't this stuck here now! ”

"Oh, I see." Xiao Han nodded, and asked again: "Then you haven't thought about using other things to transmit?" ”

"I also thought about using knots to wrap two sets of gears, but the water hammer cast was so heavy that ordinary ropes would break in a few strokes. Even ropes made of old rattan silk can't be sharpened for long, and they can't be used with oil like the shaft. ”

At this time, the old bird spoke, explained the problem simply and clearly, and then looked at Xiao Han quietly, Cao Housheng said, this son is a genius, although the extremely exquisite hinge can prove this, but the old bird still wants to witness it with his own eyes.