Courtyard House: Primordial Chaos Pearl

The morning sun shines on the roof of the R&D center in the Hongxing Agricultural Machinery Industrial Park, where rows of silvery-white solar panels reflect dazzling light like neat scales. Inside the "Deep Space Engineering Laboratory" on the fourth basement level, however, the atmosphere is even more somber than in the Mars simulation cabin—the first system integration test of the "Hongxing-130" asteroid mining and supply agricultural machinery is underway.

In the center of the laboratory, a machine even more "robust" than a Martian farm machine lies quietly. It lacks the wheeled or tracked chassis of traditional farm machinery, instead employing a multi-legged walking structure. Each "leg" ends in a retractable mechanical claw, suitable for gripping on low-gravity, irregular surfaces. When unfolded, its sides resemble a pair of folded wings, covered with flexible solar panels and a radiation shielding layer. Most striking is its front "mining arm"—composed of three joints, with the end capable of switching between a drill bit, a bucket, and a sampler.

Lin Dong stood in front of the observation screen, on which lines of parameters scrolled: the asteroid's gravity is about 1/100th that of Earth, it is almost a vacuum, the temperature on the sunlit side can rise to 120°C, while the temperature on the shaded side drops sharply to -170°C, and there is a risk of high-speed micrometeorite impact.

"This time it's not as simple as farming." He Yushui placed a thick mission document on the table, the cover bearing a striking red heading—"Deep Space Resource Supply System Plan." "We need to transform the water ice and metallic minerals of asteroids into usable resources: water will be decomposed into hydrogen and oxygen for fuel and breathing oxygen, metals will be used for 3D printing of repair parts, and mineral elements will supplement crop nutrient solutions. In short—to make interstellar agriculture no longer dependent on Earth's 'delivery'."

Wearing an anti-static suit, Yan Jiecheng stared intently at the hydraulic lines of the mining arm, his brow furrowed: "Under low gravity, hydraulic oil will produce air bubbles, and traditional hydraulic systems are prone to cavitation. Moreover, the surface of asteroids has a lot of debris, and if the force is uneven when the mechanical claw grips, the entire machine may be 'bounced' away."

Lin Dong nodded: "So Red Star-130 needs to do three things: stability, accuracy, and closed-loop. Stability means stable movement and gripping; accuracy means accurate drilling and sampling; and closed-loop means closed-loop resource processing and life system management."

He had barely finished speaking when the lab door opened a crack, and Lin Xiangyang poked his head in. The boy, dressed in a school uniform and carrying a backpack, didn't look like a student at all; instead, he resembled a little technician: "Dad, I've modified the algorithm for the stratified detection device. It can now simultaneously output three-dimensional distribution maps of salinity, humidity, and bacterial activity. You're doing joint testing today; do you need me to record the data?"

He Yushui paused for a moment, then smiled: "Xiangyang, you haven't finished school yet, have you?"

Lin Xiangyang said confidently, "The teacher said this was 'scientific research practice' and gave me a leave slip."

Yan Jiecheng laughed heartily: "Alright, little technician, get to work. You're in charge of recording, I'll oversee the pipelines, Rainwater will watch the life support system, and Lin Dong will make the final decisions—clear division of labor."

Joint testing begins.

The multi-legged chassis underwent a walking test first. The mechanical gripper gripped the simulated asteroid surface (a mixture of gravel and ice chips), and the machine moved slowly. On the first attempt, the mechanical gripper gripped too tightly, causing the gravel to be lifted up and the machine to tip slightly to one side; on the second attempt, the mechanical gripper loosened, resulting in the machine "slipping" under low gravity, and the entire machine floated up like a piece of paper being blown by the wind.

A gasp rippled through the observation room.

"Stop!" Yan Jiecheng immediately pressed the pause button, sweat beading on his forehead. "See? The gripping force and reaction force must be dynamically matched. In low gravity, any excessive movement will send you flying."

Lin Dong remained calm. He zoomed in on the observation screen, staring at the force curve of the robotic claw: "The problem isn't with the claw, it's with the control logic. We need an 'adaptive gripping algorithm'—that allows each leg to automatically adjust its gripping force based on the coefficient of friction of the contact surface and the size of the gravel."

That night, Lin Dong entered the chaotic space. He input all the debris distribution, friction coefficient, and gravity parameters of the asteroid's surface into the simulation system, generating tens of thousands of terrain samples. The Chaos Bead's deductive ability was like a tireless supercomputer. After countless trials and errors, it finally obtained a stable control strategy: the mechanical claw first "touches - identifies - then grips," judging the surface hardness by the rebound force upon contact, and then dynamically distributing the gripping force of each leg to ensure that the center of gravity of the machine always falls within the stable triangle.

The next day, the Red Star-130 underwent another joint commissioning.

The multi-legged chassis traversed the gravel area steadily, the mechanical claws moving with the agility of a spider, gripping, lifting, and lowering with a precision so refined it resembled a dance. Yan Jiecheng stared at the force curve and finally breathed a sigh of relief: "It's stable! This is more like a machine capable of traversing an asteroid."

The next step is drilling and sampling.

The mining arm switches to a new drill bit, aligning it with a simulated water ice layer. The drill bit rotates, carrying away ice chips which enter the resource processing chamber through a conduit. Inside the processing chamber, a miniaturized "thermal sublimation separation unit" begins operation: first, the ice chips are heated and sublimated into water vapor, then condensed into liquid water; subsequently, they enter an electrolysis module to decompose into hydrogen and oxygen; finally, they enter a mineral separation module to extract metal ions such as iron, nickel, and cobalt.

"Water recovery rate 92%, electrolysis efficiency 88%, metal extraction rate 76%," the technician reported, his voice filled with excitement. "This means we can achieve self-sufficiency in fuel, oxygen, and water on an asteroid!"

He Yushui, however, did not completely relax. Pointing to the closed-loop curve of the life system, she said, "Self-sufficiency is not enough; stability is also necessary. If the thermal management of the resource processing module malfunctions, temperature fluctuations will cause a significant drop in electrolysis efficiency and may even lead to pipe freezing and cracking."

Lin Dong nodded: "Thermal management is key. We use phase change materials modified from Chaos Beads for the cabin interlayer, which stores heat during the day and releases it at night; plus a micro heat pipe array to distribute the heat evenly. This way, even with a huge temperature difference between the sunlit and shaded sides, the cabin can remain stable."

Once the plan was finalized, the R&D team immediately began modifications. Jia Dongxu's core component base once again entered "wartime mode," with the 3D printing workshop operating around the clock, printing batches of titanium alloy parts; Bang Geng led his team to optimize the sealing structure of the electrolysis module to ensure no air leakage in a vacuum environment; Yi Zhonghai, although unfamiliar with deep space engineering, reminded them with his old experience: "Your machine is most afraid of 'getting stuck' on asteroids, whether it's the drill bit or the valve, once it gets stuck, it's all over. You need to have a redundant design."

This statement was written into the technical specifications. The mining arm of the Hongxing-130 has been equipped with a spare drill bit, the valves adopt a dual redundancy structure, the critical circuits are equipped with backup channels, and even the mechanical claw has been designed with a modular "breakable claw replacement" feature.

A month later, the Red Star-130 underwent a "full system closed-loop test".

Inside the laboratory, the asteroid simulation chamber is activated: low gravity, vacuum, and extreme temperature differences. Red Star-130 first mines the minerals, then decomposes water into hydrogen and oxygen, while simultaneously extracting metal ions; subsequently, the metal ions enter a 3D printing module to print a small seed head component; finally, the hydrogen-oxygen fuel cell generates electricity to power the micro-crop cultivation unit inside the chamber, where interstellar pasture seedlings continue to grow in nutrient solution.

When the printed seed head parts were installed onto the spare interface by a robotic arm, enthusiastic applause erupted in the observation room.

Yan Jiecheng slammed his fist on the table in excitement: "We did it! We really did it—mining, manufacturing parts, and growing crops in deep space, all in a closed loop!"

Looking at the stable curve on the screen, He Yushui's eyes reddened slightly: "This means that future Mars bases will no longer need to frequently transport supplies from Earth. We can establish supply stations on asteroids and turn the 'Earth-Mars route' into a truly sustainable route."

Lin Dong turned his gaze to the window. The sun was slowly rising, illuminating every factory building in the industrial park. He thought of the mornings in the courtyard, of the days when he struggled for a full meal, and a sense of peace, indescribable, welled up inside him.

Just then, the office phone rang.

The ESA representative spoke rapidly on the phone: "Mr. Lin, we have seen your complete closed-loop test data. This is amazing! We hope to include Red Star-130 in the 'International Lunar-Mars Resupply Chain Program' and invite you to participate in the joint construction of the asteroid resupply station."

Almost simultaneously, the UAE also sent a message: they are willing to invest in the construction of the first "Deep Space Resources Joint Laboratory" and upgrade the Dubai Mars Simulation City into an "Interplanetary Agriculture Supply System Test Site".

The news caused an uproar in the industrial park. Young technicians excitedly discussed in the corridors that they would not only be able to farm on Mars in the future, but also "mine and cultivate land" on asteroids.

Lin Xiangyang, holding his laptop, spoke with the seriousness of someone preparing an important report: "Dad, I think the supply station should be modular, like building blocks. That way, if one part breaks, you can just replace it, instead of shutting down the entire station."

Lin Dong looked at his son and suddenly recalled the night he first simulated agricultural machinery in the chaotic space. Back then, he only wanted to survive, but now, his child was already thinking about how to make humanity live better in deep space.

"That's a great suggestion." Lin Dong handed the notebook back to his son. "Write it into the plan as the core idea of ​​the 'modular supply station'."

That afternoon, Hongxing Agricultural Machinery held a high-level meeting and formally established three major directions:

To jointly build an "International Asteroid Replenishment Station" with ESA, with Red Star-130 as the core mining unit;

A "Star Agriculture Supply System Test Site" will be built in the Dubai Simulation City to verify the closed-loop ecosystem and resource recycling.

The "Deep Space Agriculture Project" will be launched in China to cultivate a group of interdisciplinary talents who understand both agriculture and aerospace.

At the end of the meeting, He Yushui placed a new course schedule in front of Lin Dong: "Hongxing Agricultural Machinery Technology College is preparing to open a 'Deep Space Agriculture Major', with courses including closed ecosystems, resource recycling engineering, aerospace materials and structures, low gravity fluid dynamics... I have already arranged the courses for the first semester."

Looking at the course schedule, Lin Dong suddenly laughed: "Ten years ago, who would have thought that an agricultural machinery factory would teach these kinds of courses?"

Yan Jiecheng laughed, "Ten years ago we were still arguing in the courtyard house, now we're discussing how to grow crops on an asteroid. Times have changed, and we've changed with them."

Night had fallen, but the lights in the research and development center were still on. The Red Star-130 sat quietly in the center of the laboratory, like a steel behemoth about to embark on a long expedition. Its body bore the familiar red emblem—the Red Star.

Lin Dong stood beside the machine, reaching out to gently stroke the logo. The cold, hard metallic touch sent a warm feeling through him.

He knew that the real journey had only just begun.

From traditional courtyard houses to Mars, and from Mars to asteroids, the chain of Hongxing agricultural machinery is constantly extending—connecting not only the land and the stars, but also humanity's boundless imagination for the future.

And at the end of that imagination, one day, humanity will harvest its first grain in the fields of another planet, and light its first lamp in the mining areas of an asteroid.

At that time, people might remember that it all started with an ordinary person in a courtyard house, holding a mysterious Chaos Pearl.