Chapter 77: Homemade Oxygen Generator

Words : 1232 Updated : Sep 12th, 2025

Chapter 77: Chapter 77: Homemade Oxygen GeneratorAfter listening to the technician, Uncle Ding reconsidered and thought it made sense. The external environment today is not like the peaceful era before the disaster; hiding in the mountains without a thorough search might allow one to evade capture for a month, but the extreme cold and lack of oxygen would be enough to claim anyone’s life. It’s just like trying to climb Mount Everest or travel to the North and South Poles before the disaster. Without adequate preparation, professional protective equipment, and sufficient warm clothing, what awaits you is only cold and death. However, while watching the technician install these biological reaction facades, Uncle Ding suddenly thought of his daughter Ding Ning, and Mo Qingyan and her group. Although Uncle Ding hadn’t visited the shelter where Ding Ning and Mo Qingyan were, Qin Lan had some understanding of it when she went before and reported back to him, so Uncle Ding knew that their place neither had a greenhouse for planting nor any oxygen production equipment. Out of concern for his daughter, Uncle Ding asked the technician, "Is it troublesome to make equipment like this yourself? If a private shelter wants to set up a similar device, can it be done?" The technician glanced at Uncle Ding somewhat surprised, seemingly feeling that the police captain’s focus was a bit odd, but he still explained, "If it’s just creating a simple device like this, it’s not troublesome. However, the oxygen production efficiency and the maintenance and cleaning of the equipment would be very troublesome. For a private shelter, if you want to produce oxygen, I still recommend setting up a planting greenhouse, which can provide both food and oxygen as long as there’s power and water, and it’s much simpler than making a set of this oxygen production equipment." Hearing the technician’s words, Uncle Ding felt a sinking feeling in his heart and was immediately filled with concern for Ding Ning and her group. He wanted to ask the technician if there was any extra equipment, but the words got stuck in his throat and he swallowed them back. The equipment in front of him was intended for the survival of over twenty thousand people in the entire shelter, and Uncle Ding couldn’t misuse it for personal gain, even if he only needed a small part of it. Moreover, rather than setting up equipment for Ding Ning and Mo Qingyan, a simpler solution would be to bring them to the shelter. This way, it would not only solve their survival issues but also provide them with safety. After all, no matter how you put it, as a police captain in the shelter, Uncle Ding still wielded some authority, ensuring Ding Ning’s safety. Having understood this principle, Uncle Ding decided not to ask the technician further, resolved that no matter what mood Ding Ning was in this time, he would send someone to bring her over. If necessary, he would swallow his pride and apologize to her. Apologizing to his daughter is not shameful. —————————————————— The official shelters have fully equipped oxygen production facilities, but Chen Xin can only rely on himself. However, Chen Xin did not set up another workstation; instead, he used the workstation attached to the weapons cabinet. Even though it’s a workstation for making and maintaining weapons, all the tools are complete, with auxiliary materials like tape and glue also readily available. Even though the tools weren’t quite handy, modifying the materials Chen Xin had on hand to create a simple oxygen box wasn’t particularly difficult. By opening a hole in the side of a plastic box, connecting it to a pipe and a mini vacuum pump, then attaching an upright pipe placed on a screen inside the plastic box to ensure the water flowing through the pipe could reach the screen, and adding a light fixture in front of the screen, the simple algae oxygen production box was considered completed. Though this thing was horrendously crude, with all connections held by tape and sealed with glue, lacking support for both pipes and the screen, appearing ready to collapse at any moment, it was still recognized by the system as a complete survival device. "Crude Algae Biological Oxygen Production Box" "Upgrade Option 1: Enhance the algae adherence surface to increase algae reproduction efficiency, oxygen production +10%, biomass output +5%, requires 100 survival points to upgrade." "Upgrade Option 2: Modify the tank structure to improve algae photosynthesis efficiency, oxygen production +15%, requires 80 survival points to upgrade." Seeing the system providing upgrade options, Chen Xin was relieved. Since this crude thing could be recognized by the system as an algae biological oxygen production box, his next task would be to collect materials or directly use survival points to continue upgrading this oxygen box. From the two upgrade methods provided by the system, Chen Xin also inferred that the two upgrade routes for this algae oxygen production box could eventually evolve into one being a biological generator following a fuel cell route, while the other would become a pure oxygen production machine. Moreover, the algae involved in the two processes seemed to differ; the first option clearly favored adhesive-growing multicellular algae, which could recycle significant biomass for fuel cell conversion to electric power. The second option, however, was clearly better suited for planktonic algae, aiming just to generate more oxygen rather than recycling biomass. While both upgrade options could be chosen, Chen Xin clearly favored the first, as he needed the biomass fuel cell to provide electricity for the shelter. After all, he still had a greenhouse to provide oxygen, so relying on the oxygen box for large-scale oxygen production wasn’t necessary. In his plan, it was just an auxiliary device. Nevertheless, upgrading the oxygen box couldn’t proceed immediately. One reason was that Chen Xin no longer had enough materials on hand, and upgrading the weapons cabinet and protective suit had already exhausted his survival points. Even though atmospheric oxygen levels hadn’t yet reached a point where breathing was impossible, and he still had a greenhouse to provide oxygen, upgrading the oxygen box wasn’t urgent for Chen Xin. Moreover, checking the data again, Chen Xin realized that even if the surface and marine ecosystems completely collapsed and there was no sunlight for photosynthesis, the oxygen in Earth’s atmosphere was sufficient for human breathing for a long time. While the previous global fires and meteor impacts consumed a large amount of atmospheric oxygen, the remaining oxygen was still enough for humans to use for a long period, even supporting them until the dust in the sky cleared and Earth’s ecosystem was rebuilt. Furthermore, based on Chen Xin’s calculations and the data he found on his computer, the current state of complete darkness might only last up to a year before improvement. Although the dust still blocked most of the sunlight, the Earth’s surface could transition from a lightless to a dim environment within one to three years, and algae in the ocean, covering 70% of Earth’s surface, can perform photosynthesis in a dim environment to produce oxygen. In other words, humanity could face oxygen deficiency leading to hypoxia problems, but it wouldn’t be to the extent of making survival impossible due to lack of oxygen. The existence of oxygen machines only aims to improve the living environment in shelters, allowing humans to live better.

Chapter 77: Homemade Oxygen Generator

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