Now Lu Yu faces two choices.
Either dry the pond water or go in.
He first asked Xiao Ruan to take him to the waterfall and studied whether he could divert the waterway. Then he found that it was really impossible to do. After all, the deep pool is a low-lying terrain, even if it is really able to change the waterway. When the river is diverted, the groundwater will also seep out directly, and it cannot be emptied.
Then there is only another option left, which is to go in.
In fact, it was not that difficult for Lu Yu to get in.
At least it is much simpler than changing the river course.
With an order, Xiao Ruan began to cut wood around and build a house. Lu Yu built a furnace by himself, extracted the effective ingredients from the soil, and began to make glass.
He wanted to do this kind of thing a long time ago, but he really... can't do it, or it's useless to do it.
Glass has its function and meaning only after it becomes smooth and flat. In short, it is a cheap substitute for crystal. After all, if it can be smooth and flat, that kind of technology is not so good. Simply, if you can do this, you can easily grind the crystal into a smooth needle!
The world with extremely advanced technology in the previous life was only created in the nineteenth century. Everything before, not only was not good for light transmission, but also was uneven, and could only be used for the cheapest bottles.
So this matter is actually very difficult. Lu Yu doesn't think that he, a guy who only knows the theory, can really develop it. The key is... Even if it is done, the meaning and effect are not great. If you make some extremely high-level utensils, whether it is wine utensils or other things, in fact, the cultivation level is much higher than this. They can make more perfect things. Even Lu Yu has seen using spar. The sculpture made by splicing and carving is very magnificent.
If it is used for ordinary people, then in the previous continent where three-year-old dolls can lift heavy objects, it is really fragile and fragile. It is destined not to be cheap, it is destined to be fragile, and it is destined that no one will use it.
Therefore, Lu Yu didn't even think about it before.
But now it's different, because he needs it.
It doesn't have to be so flat and smooth, it just needs to be big enough, thick enough, and airtight enough!
His idea was to get a very long tube with a big ball underneath. Lu Yu followed the tube and hid in the ball. Then Xiao Ruan grabbed the tube on the shore, and Lu Yu could use his vision to see deep. Going down to find it.
But this is also difficult.
So, a group of people lived by this deep pool. They also built simple houses like Xiao Ruan. Because they don’t know when Lu Yu will end, and Lu Yu at least provides food, they don’t worry. , The house is built very well, and there is no meaning to pay attention to coping.
In this way, more than ten days passed quietly.
Lu Yu finally came up with a "finished product", but the gloss and flatness were still far from the original idea. When he drilled inside and looked out, there were only two or three small positions, which could not deform the outside things. 'The 'is reflected in Lu Yu's eyes, the rest of the place, either you can't see anything, or you can't see it anymore.
This is already Lu Yu's limit.
In desperation, he can only use so many resources temporarily to continue his own plan.
"Let it go, let it go! By the way, that's it, slow down."
Following Lu Yu's order, Xiao Ruan held the pipe tightly and put the glass ball that Lu Yu was in into the pool water.
She was very careful during this process, for fear that Lu Yu would be hit by the water again, until the ball squeezed to the surface and successfully brought Lu Yu down, Xiao Ruan's heart was relieved, but the movements were still extremely careful, because she knew The transparent thing in his hand is not very strong.
Lu Yu got under the water, squinting his eyes carefully to observe the surroundings.
This deep pool is very deep, but not so deep. With a flick of his hand, a piece of spirit stone was activated by him, acting as a searchlight, illuminating the surroundings brightly.
It turned out that he saw it. The surrounding areas in the water are relatively shallow, and the stones below can be seen, but the place in the middle is really black. It is not because of the deep water color there, but... it will be very much here. deep.
Sure enough, Lu Yu kept walking along the hole at the bottom of the pool, but after reaching a distance of about 20 meters, he immediately ran into a problem.
The pipe has reached its limit, Xiao Ruan's hand is already close to the surface of the water, and this thing cannot go to the next step.
But Lu Yu obviously hasn't finished it yet!
This is how to do
In particular, the buoyancy of the whole set of equipment that Xiao Ruan's hands bear can also lift Xiao Ruan into the sky at any time.
After gritting his teeth, Lu Yu made an extremely bold decision.
He first climbed up from the pipe, climbed to the mouth of the pipe, and said to Xiao Ruan: "I will shake it three times in a while, and you will let go."
"How can that work?!"
Xiao Ruan was startled when he heard it.
"Don't worry, I know it in my heart. Don't talk about this water pool, even the underworld. I can come and go freely? Really, don't worry."
This still did not persuade Xiao Ruan, but it did not affect Xiao Ruan's follow Lu Yu's instructions. After all, these are two different things. The first Xiao Ruan was Lu Yu's lover, and the latter, Xiao Ruan was Lu Yu's maid.
She has these two identities, even if neither of them wants to face them, but the facts exist, it is difficult to change.
Lu Yu didn't go back directly to the bottom, but first used some remaining glass in this'bottle mouth' to waste it and seal it up.
Then he went down and took out a lot of gold directly from the small world, carefully and evenly placed it on the bottom of the bottle. Sure enough, when the weight came, the bottle slowly dropped.
When he wants to go up, he only needs to put the gold into the small world again, and the bottle will naturally float when it is light. It's so simple.
This made him couldn't help feeling that the small world was really so convenient to use.
All the way down, it was very long and very long. According to Lu Yu's estimation, at least it had dropped by a distance of about eight or nine hundred meters, close to a kilometer, but the nearby structure was still like a'well' without any change.
This made Lu Yu look a little anxious, so he produced some gold again, which significantly increased the speed of the bottle's descent.
And in this whole process, he really didn't dare to move, the first thing he had to do was to maintain a balance.
The pipe is very long, and he regrets it a little bit. Why did he get such a long pipe by himself? If I knew it was going to happen, I might as well just get a ball.
Now, if there is an imbalance, the pipe will definitely hit the stone wall, then the pipe will break, and the'electric water' from outside will immediately pour in. Lu Yu must have been electrocuted on the spot.
So in general, Lu Yu is very exciting to'play' now!
His nerves were extremely tense, paying attention to all changes in his body.
until…
After sinking 1,200 meters, the bottle, which was already very thick and very thick, was finally overwhelmed. The pressure of the water made some unpleasant noises. When Lu Yu was about to'return to the voyage' immediately...
The scenery in front suddenly changed, and a'black light' lit up not far below.