"Wooden?" Lu Mu was stunned for a moment.

"Yes, wooden, something like this." Huo Gang thought about it, and simply drew a basic tower windmill structure with a sword on the ground.

Although Huo Gang has not learned to paint, but the basic three views of later generations, it can be said that he has never seen pork or pig running, so Huo Gang painted such a three-dimensional picture, which can be said to be very vivid.

And Lu Mu and the others understood as soon as they looked at this picture, "General, how did you draw this picture?" This is too ......" Lu Mu didn't know how to describe it for a while, but his tone was amazing.

Several other craftsmen around him had the same expressions, and although they were not carpenters, they actually had some things in common.

"I can hand this over to you later, it's called three views, this tower can be thirty feet high, or even forty feet, because the structure of such a tower body will be very strong, so you can make four blades." Huo Gang said something about it.

How to do the rest of this tower body, these aspects do not need Huo Gang to say, the Chinese can be said to be the ancestors of the world in terms of playing with wood, and the wooden building without any nails in the wedge-shaped structure Chinese began to play hundreds of years ago.

So in this regard, as a carpenter, Huo Gang is not worried that Lu Mu will not be able to complete it.

"No problem." After studying it carefully, Lu Mu nodded decisively and said, "The only drawback of this structure is that it cannot adjust the direction of the windmill with the direction of the wind, but because of the two mountain ranges, this valley will be west or northwest wind for most of the year, which will not affect our use." ”

"Okay, then I'll leave this matter to you." Huo Gang nodded decisively.

"Yes! However, if the tower is more than 40 feet high, then its fan blades will probably be heavy, and it may be a problem to install it at that time. Wang Luo next to him thought for a while and said.

"There is no problem with levers + pulleys, we have enough cattle and horses." Lu Mu thought about it and gave an answer.

Listening to their discussion, Huo Gang suddenly felt that he really underestimated these ancient craftsmen, and the wisdom of the ancients could not be underestimated sometimes. Although the principle of leverage was invented by Archimedes, it is obvious from the dialogue between Lu Mu and them, in fact, the Chinese have long begun to apply it.

Although they don't understand the truth, but they have already put these principles into use, but it's a pity, because the status of craftsmen is not high, so there are too few craftsmen from ancient times to the present, which leads to most of these craftsmen can not summarize, plan and record these things that are actually used.

Otherwise, Huo Gang felt that among so many craftsmen from ancient times to the present, there would definitely be some folk masters who summed up this knowledge. It's a pity that the popularity of knowledge in this era is too low.

This is also the reason why these craftsmen teach their apprentices so slowly in this era, because there are some truths that they can't summarize, they can only give to their apprentices through practical application, they can only tell their apprentices, you can do this to have such a result, but you can't tell their apprentices why this has such a result.

And their apprentices can only memorize by rote, if they are a little stupid, this inheritance will naturally be broken.

It's just knowing what it is, but not knowing why.

Huo Gang did not interrupt their discussion, but let them discuss here, and Huo Gang asked Huo Zheng to send people back to prepare for the delivery of some dry food and felt tents for living, and asked Wu Ping to stop the work of transporting wood, especially some good wood to be supplied here first.

These woods will be used in the main next buildings, but the woods in Huo Gang's hands are only those woods in Yangguan, it seems that it is time to investigate a larger area, Huo Gang is ready to send people to the east to investigate, especially Longle Water east of Yangguan, the environment of the Western Regions in this period is not known to be many times better than the environment of this area more than a thousand years later.

Therefore, it should not be a problem to have forests near Longle Water, and this area to the east, although it belongs to the territory of Datang Guazhou, but at present, Datang will not send troops out of this area.

……

Just when Huo Gang had a new start here, the Tang Yumen Pass, Zheng Ning had been back here for several days, and Zheng Ning had heard some news, such as Huo Gang's existence, but obviously Huo Gang was not a good reputation in this Yumen Pass.

Here, Huo Gang is an out-and-out murderer, who kills people without blinking, and does not even let go of babies, and many tribes of the Turkic people have been slaughtered by him, so the government on this side of Yumen Pass recommends that all caravans going to the Western Regions take the northern section of the Silk Road, rather than the southern route.

The vast majority of the caravans also followed the advice of the government, and many caravans that originally took the southern route changed to the northern route, exited from Yumen Pass, and went directly to the northern route to Yiwu Kingdom (later Hami). Originally, because of the development of the northern route, there were not many caravans on the southern route, but now they are almost gone.

But these are not the point, the point is that Zheng Ning, who has just returned from the southern front, knows very well that Huo Gang, who can shout out such words as "Those who offend my Han Tianwei, although they are far away, will be punished", is not what people say by mouth.

Although Huo Gang shouted "Dahan" instead of "Datang", which in itself is the biggest disobedience, but then again, you Datang don't care if I live or die, why should I be this "Tang man"?

Zheng Ning had no way to say this, but after Zheng Ning came back, he found his main family as soon as he came back, of course, it was said that it was the main family, but in fact it was just a side branch of the main family, but they were all serving the same family owner, in this era, this is the norm.

And judging from the news he got, Zheng Ning obviously has something to do with Liangguo Gongan Xinggui, but Zheng Ning doesn't care about this, because Zheng Ning doesn't care about An Xinggui's face.

Because Zheng Ning's main family is the Li family in Longxi! In a way, this is the royal family! Because the current emperor is from the Li family in Longxi! Of course, the Li Tang clan is already a separate family, after all, the entire Li clan in Longxi is too big.

Of course, this caravan to the Western Regions does not only belong to the entire Longxi Li Clan, but is also responsible for the Longxi Li Clan, but it is also the Longxi Li Clan! The wealthy families of this era may be very cruel and disdainful of some of their family side branches internally, but when it comes to the outside, they are absolutely united.

There is a saying that is not good, it depends on the owner to beat the dog, not to mention, many of the five surnames Qiwang and other famous families in the entire Tang Dynasty rely on the side branch to operate a business to support the main family, and the main family provides political asylum for the side branch.