On one side is a deep stream that is unsightly. On the almost vertical cliff surface, this stream is formed by the erosion of groundwater for years. The bottom of the cliff is full of rugged rocks, and the top surface is almost full of sharp sharp angles. If a creature falls on it, it will definitely not land intact.

There is a road on the cliff that can accommodate a carriage. In the middle of the road, there is a hole with a diameter of about five meters. From this hole, you will enter a wide cave.

The cave inside has a main hole with a diameter of forty meters, which is a vertical oval shape. There are dozens of small caves of different sizes around the main hole, surrounding the main hole. One of the small caves has a channel of about two meters in diameter, leading to another direction, and finally comes out at the intersection of a hole.

This place completely meets Rob's requirements for the real-life room. The terrain is high, connected in all directions, easy to defend and difficult to attack. As long as you block two passages of the cave, others will not be able to enter the cave.

The terrain of the main passage is relatively dangerous. To reach the main passage, you must pass through a long cliff passage. One side of the cliff is an endless deep ravine. As long as you arrange defenses to defend the cliff passage, it will be useless even if you transfer 10,000 soldiers to come.

The exit of the secondary passage is very hidden, and it is also at the intersection of caves, which are well connected. As long as the exit is disguised, it can be regarded as a secret escape passage.

Rob was extremely satisfied with this location. After taking someone to check the internal situation, he immediately decided to build the laboratory here.

In the well-connected cave world, concealment is actually the biggest advantage.

Rob brought all the prisoners to the cave and repaired the caves. There must be a very large amount of engineering work, and these prisoners can act as coolies.

Because of the need for translation, Rob also brought Zhizhigu with him. In addition to Zhizhigu, there are also tax officials' entourages who can understand the common language of humans. However, Rob did not want to hand over the translation work to the entourage, so as not to insert his own opinions into the translation.

Because of his age and weakness, the tax officials' racks became a special tool for Zhizhigu. Eight rats carrying an old man with a normal rats size can be much easier than the tax officials who have a serious weight exceeding the standard. The eight rats carrying a racks were very satisfied with this.

After taking all the prisoners into the cave, Rob took out some rice and let the prisoners cook themselves. He could not eat for a long time, but these prisoners, Tieler Kitten Girl and others needed to eat.

After eating and sizzling rice, Zhizhigu ran to Rob by himself and said, "Mr. Rob, is this rice the food you prepared for your slaves? Can they taste such delicious rice in the future?"

Preparation? No, this rice was not specially prepared for these prisoners, but Rob prepared for himself and others, but rice was not worth much. Rob would definitely not bother to prepare another type for the prisoners alone, so he still had the chance to eat rice in the future.

"I will eat it occasionally. The usual food is rice, corn, peanuts, potatoes, beef, sheep and meat..." Rob listed the food he had reserved.

After hearing the name of rice, corn, peanuts and potatoes, the name behind Zhizhigu could no longer be heard. Its eyes shone brightly and looked at Luobu as if he saw a treasure: "Lord Rob, do you still need people? Let our Zhizhigu tribe become your slaves, as long as we can occasionally eat rice, peanuts and other things, let us become your slaves." Zhizhigu begged.

The wise rat people are underground and rely on the light of night moss to plant green grass. It is the only food that can grow and sprout under the light of night moss and can be eaten. The starch content in the thick stems and leaves is very rich, but the taste is definitely not delicious.

What's more, even if it is a very delicious dish, it will get tired of eating it every day. Twenty years ago, when Zhizhigu was a child, he followed his father to the ancestral pagoda and tasted the taste of rice and potatoes. The taste was still fresh in his memory even after twenty years. But Lord Rob actually gave these delicious foods to the slaves. It was so wasteful. If he had such treatment, Zhizhigu and its children would be willing to become slaves to Rob.

Rob thought for a while and agreed to Zhizhigu’s request. It was just some rice and other food, which was very cost-effective to exchange for more than one hundred wise rat workers, but Rob also had a request.

"After you come in, you can't leave at will." The location of the laboratory needs to be kept confidential. If these wise rats want to join, they cannot leave at will. In fact, if Zhizhigu does not propose to join, before it leaves, Rob will also put an explosive steel belt on it to prevent the location of the laboratory from being leaked.

"No problem, then I'll call my children right away and bring them over." This is not a problem for Zhizhi Valley. The space for the wise rat people need is not large. Many people have never left the cave where they were born in their entire lives. The cave Rob is looking for now is even larger than the cave where it was originally located.

...

In the following period, Rob devoted himself to the construction of the laboratory. He used the fastest time to bring all the personnel into the cave, then closed both exits, and carefully disguised them. Even if someone passed outside the cave, he might not be able to find the existence of the cave.

This cave is already deep in the cave group. If no one leads the way, ordinary people will not be able to find it.

Rob cleaned out one of the small caves, turned out all the necessary tools, and then created two hexapod components of the same level as Jirasa at the fastest speed. However, the bodies of these two components no longer use Yantien, but use ordinary fine iron. Yantien is only used in the part of the shovel and drill bit.

Two hexapod structures, together with Jilasha, layer all the small caves, open up, and build stairs to build them into a shape suitable for biological life.

After more than a month of hard work, the entire cave was built mainly with the main cave. The small cave was divided into five layers, with a total of fifty small caves of different sizes. The lowest floor was distributed to the Zhishishi people clan, and the second cave was distributed to the villagers of Tiedun Village. Because there are many humans, all caves were also built, which were allocated by households.

The Wise Rat Man tribe also planted night moss in various locations in the cave to provide lighting for the cave.
Chapter completed!