The reason why Gu Yi customized dozens of large triangle-like wooden buckets in [Shuiwatun] is to draw out the delicate sand gold in the mud and sand.

This triangular wooden bucket is also called "golden bucket" or "rocking gold plate". It is a tool commonly used by Gu Yi in his world. Although he has only seen it briefly in a documentary, it does not prevent Gu Yi from imitating it. After all, the thing has no technical content and is just a few wooden boards.

With this thing, Gu Yi and the others don’t have to shake themselves to death with heavy copper dishes in the water like last time. They just need to hold the gold bucket with both hands and let it float on the water surface and shake it gently. They can easily filter out the lighter mud and sand by eroding the water flow that is constantly shaking and rinsing out the heavy sand gold.

After Gu Yi just demonstrated it to others, he handed over the work to the mine clerks. So the mine clerks who had just finished working as construction workers transformed and changed their jobs into gold mining workers. Let's go slowly!

As for the quartz sand that was washed out by the way, Gu Yi couldn't use it for the time being, so he could only find a piece of open space to pile it up there to expose it to the sun. The so-called "Dragon Marrow Jade" in this world refers to those large pieces of quartz stones, which cannot be smaller than the size of a thumb, otherwise it will be worthless at all.

Even if the large quartz stone was fished out, Gu Yi had no time to deal with it because there were still a large number of mica blocks mixed in it. People who have never heard of this world like mica, although there is almost no difference between quartz stone and mica stone.

What really consumes Gu Yi's energy is the brewing process that he needs to use himself. After all, only theoretical knowledge and no practical experience are required, Gu Yishao must not conduct a lot of experiments to master accurate material ratios.

Fortunately, the wine made a few days ago is already usable. Although some of the wines were not done well and the fermentation temperatures were different, some of them became moldy and broken. However, Gu Yi made a total of 1,000 kilograms of germinals. Even if part of them was broken and dried, the remaining wines could still be hundreds of kilograms.

Gu Yi classified the wines with slightly different types due to the size of the jar and the fermentation temperature during fermentation, and prepared to brew them at the same time, trying the best taste.

Moreover, since Gu Yi made sweet wine this time, he could only brew rice wine for experiments for the time being, and handed over the gold digging work to the mine clerks. When he was making wine, he directed some mine clerks with good skills to build a hydraulic mill according to his requirements.

It is not difficult to build a hydraulic mill. After all, the technical content of this kind of wood product is not high. As long as you have seen the actual object with your own eyes, you can basically draw a rough structural diagram.

Moreover, before Gu Yi came to this world, he liked to stay at home and read the "farming articles" posted on the Internet. The "seniors" who had the same experience as him almost regarded these things that could be used as "golden fingers". The research and analysis were very simple and thorough.

What makes people laugh is that some boring people even compiled a piece of the various golden fingers used by the protagonists in the farming article, called "Guide to Use Gold Finger", which describes the manufacturing and use methods of various golden fingers in detail, and is called "The Book of Three Treasures" together with "Guide to Survive the World" and "Bayer's Wild Survival Book".

I just found it interesting at that time, and with a fun attitude, I studied Gu Yi in the "Three Treasures Book" in detail. I have to thank those "predecessors". If it weren't for them, the otakus who lived in a modern city and couldn't tell the difference between leeks and wheat seedlings, would they know these ancient and primitive instrument structures and principles?

But when Gu Yi himself entered another world alive, he suddenly discovered that thousands of "seniuses" had set an example for him, and those boring people who worked hard to collect information and compile the "Three Treasures Book" also laid a solid foundation for him and paved the way to become a "great inventor". This is also the reason why Gu Yi is currently in trouble but still retains a "confidence".

Although the tools were primitive and crude, these exquisite mine clerks quickly followed Gu Yi's instructions and relied on the fit of wooden wedges. They built the first hydraulic mill like a small Ferris wheel without a nail.

The five-meter-high water wheel was driven by the strong water flow at the outlet of the underground river, making a squeaking sound and rotating. The stone mill was connected through a thick central axis, connecting the lever and gear, and the wooden pestle connected to the other end of the stone mill was like a chicken pecking at rice, pounding it into the stone mortar one by one, making a "bang bang" sound.

Everyone who had never seen such a magical instrument exclaimed repeatedly. The water wheel could allow the stone mill to be ground without human power. The wooden pestle turned and started to rush. Unfortunately, before the water wheel could rotate for a long time, the part of the connecting shaft began to smoke. Amid the screams of everyone, a terrible "click" sound broke and collapsed.

The strength of the transmission shaft was not strong enough, which almost made Gu Yi scalp break. In the past, he saw the "predecessors" "inventing and creating", as if they were simply like hiccups and farts. They could develop the agricultural era into the industrial era in a few words. When they really did it themselves, they found that it was not that easy at all.

In the end, Gu Yi had no choice but to let Ge Qiao, the kid, risk his life to ask the old dwarf to help make some metal parts. He thought that the old dwarf who wanted to drink would not refuse in order to process the raw materials for winemaking.

Ge Qiao took the components structure diagram of Gu Yi painted on the velvet paper and went to the fire cave tremblingly. Fortunately, he successfully asked the old dwarf to agree to help. In a short period of time, he made a batch of key components and finally stood up the water wheel again.

After several hours of rotation, there was no malfunction. Gu Yi was relieved and announced that the construction of the hydraulic mill was successful!

The excited mine clerks took the initiative to get the millet and pour it into the stone mortar without Gu Yi's instructions. They looked at the donkey-like wooden pestle with great enthusiasm, pounded the millet and grains in the stone mortar with bran, and occasionally exclaimed "It's so powerful!" and "It's pounded quickly and well!"

With the first one, it is naturally not difficult to come later. After adjusting the details such as strength, angle, etc., the large and powerful miners quickly set up the second, third, and even the tenth water wheels, and at the same time rotated on the Xiangkong River.

But after having the hydraulic mill, there was also annoying problem, that is, it was too attractive to these earthen leopards, and I couldn't help but touch this one and take it out, trying to figure out how the big wooden plate slowly turned by water was moved by the stone and wooden pestle. They didn't work one by one, but they were excited to bring millet and lined up to pound it with their own hands to enjoy it.
Chapter completed!