The immigration ship is really on that brown planet.

For some unknown reason, those who finally arrived landed on the brown planet instead of choosing the planet, which was obviously watery and at the right temperature. Although the temperature of that planet can also allow humans to survive, it is obviously far from the ecological environment here.

After landing, the people on the migrant ship discovered that it was impossible to survive on the brown planet. They dismantled the immigrant spaceship, used the last resources to build a spaceship that shuttles between planets, and came to the blue planet, becoming the ancestors of all the people here.

The earliest immigration ships were hoisted with blue flags, so they became the totems of many large and small forces.

"In that era, was there any force that used the blue flag?" Lin Xi asked.

Li Ruobai searched for the information, shook his head and said: "At that time, it was still in the period of the Great Division, and there were many small forces using the blue flag, so I couldn't determine which one it was. The information from that period is also imperfect. ”

Lin Xi thought for a while and said, "It seems that we need more clues." Now the first thing to do is to find a way to find someone else. They might also be attacked. ”

"We're going to do some preparation here. ”

At this time, Orm said, "Can you let them in first? Their oxygen tanks don't have enough storage to last long." ”

Lin Xi nodded and said, "Without weapons, these people can't make any tricks." ”

Li Ruobai beckoned to Chu Jungui and said, "Let's take him there." ”

The two escorted Orm, gathered the residents of the settlement, and after scanning the body for any weapons, Aum appointed a few people to move all the weapons to a warehouse and lock them up. Then everyone went home.

After doing all this, Li Ruobai said to Aum: "Let's stay at your house, and I can show you something later." ”

Back home, Orm's wife and daughter were also in the room, standing against the wall, cramped and uneasy.

Li Ruobai cleared a vacant space in the hall on the first floor, set up the manufacturing machine, and then drew a sketch by hand on his personal terminal, and said to Aum while drawing: "It seems that oxygen is everything to you." ”

"Of course, everyone needs to breathe and the engine needs to be able to start. "Aum spreads his hands.

"Actually, oxygen is not that precious. ”

"We know that, but we can't help it, we don't have the capacity to make oxygen. ”

At this time, Li Ruobai had already completed the sketch and entered it into the manufacturing machine, and a moment later, a half-meter-high machine appeared in front of everyone.

"Take two tubes. Li Ruobai commanded.

Al quickly found a leather pipe, Li Ruobai looked around, made a hole in the window, stretched one end of the leather pipe out of the window, connected the other end to the machine, and then installed another leather pipe on the exhaust gas outlet, leading to the outside of the house. Finally, a polymer battery was installed, Li Ruobai activated the switch, and a stream of air immediately erupted from the machine.

Orm sniffed hard, his face suddenly changed, and he lost his voice: "Oxygen!"

In Chu Jungui's field of vision, the oxygen content in the air stream blown out of the machine continued to increase, and in the blink of an eye, the concentration had reached more than 60%, and it was stable.

"This, this, how?" said Orm, his hands trembling as he threw himself in front of the little machine. Al, on the other hand, is more interested in large manufacturing machines that can create things out of thin air, and wants to touch them, but he doesn't dare.

At this moment, Li Ruobai snapped and turned off the oxygen concentrator. Looking at Aum's disappointed and nervous eyes, Li Ruobai said slowly: "Do a few things for us, this thing is yours." ”

Orm quickly made up his mind, saying, "We hunters originally made a living by working for our employers. Just give us that machine, and all of us will be yours!"

"Deal. ”

After nightfall, Orm and his family slept in the warehouse on the first floor, giving up all the rooms upstairs to the four of them.

The four of them didn't need such a long sleep, so they got together to discuss their next course of action.

Li Ruobai clicked on the personal terminal, projected a virtual map of the surroundings among the four people, and said: "I sorted out the information I got in the past two days, and it is basically certain that there are people on this planet who have deliberately carried out a blockade of knowledge and technology. The technical level and knowledge system of these people in the settlements are artificially separated, and the population of each settlement is too small, and they do not communicate with each other, so there is no possibility of self-research and breakthrough. ”

Chu Jungui was a little puzzled and asked, "Didn't there be many people in the old era who relied on their own exploration to invent?"

"You're talking about the 18th century, right? It's the 35th century! Without auxiliary chips and highly developed brains since childhood, modular teaching, the basic theories of the subject alone are enough to learn for 50 years. I don't understand anything, what kind of invention do you want to make? You see, the people here can't even build such a simple pressure swing adsorption oxygen machine. It's not that they don't have enough technology, but they don't understand the principle at all, and they can't design such a machine even if they die. ”

Chu Jungui was so refuted that he was speechless, and the test subject still knew very little about human society, especially some deep-seated things.

"It was no secret in the old days that there was such a simple device for concentrating oxygen in the air, but the people in the settlement still had to survive by producing oxygen through chemistry. This shows that the city wants to control all the settlements by monopolizing the supply of oxygen. ”

"What should we do now? go to the city?" asked Four.

Li Ruobai shook his head, "No, it's not the time yet." Now that we know that someone is deliberately blocking technology, most likely the guys in the city are doing it. It is certain that they must have weapons in their hands that far exceed the scientific and technological level of the settlement, and according to the available information, the city's defenses are also very complete, and it is a fortress in its entirety. We lack heavy firepower right now, and storming the fortress is not a good idea. ”

Li Ruobai released the last image of the orbital spacecraft before the explosion that day, and said: "According to the last image we saw, I have roughly calculated the area where several other rescue capsules may fall, which should be to the west of where we are now." Therefore, the focus of our exploration should also be in the West. ”

He showed up again, pointed to one of the settlements, and said, "This settlement is 160 kilometers away, and it takes about a day. In this case, Jungui and I will take Orm and go over there first. Sister Xi and No. 4 are here waiting for us to come back. If someone from the city comes over during this time, then grab it and ask for some information. When those people in the city find out that something is wrong, Jungui and I should come back. No matter how many people they send, it's always to deliver food. It is better to annihilate them in the field than to storm the fortress. ”

Lin Xi had no opinion, so Li Ruobai and Chu Jungui packed up some ammunition supplies, took Aum with them, and left the settlement before dawn to explore west.