Courtyard House: Primordial Chaos Pearl

In the late autumn of the Hongxing Agricultural Machinery Industrial Park, the sycamore leaves are swept up by the wind, swirling in the air like tiny golden fans. Meanwhile, the Mars environment simulation laboratory on the third basement floor of the R&D center remains isolated from the outside world—the heavy lead alloy door slowly closes, the red warning light turns a stable pale blue, and the cold, metallic smell mingles with the circulating air from the experimental chamber.

"Air pressure stabilized at 610 Pa, gravity adjusted to 1/3 of Earth's, radiation intensity simulated at noon on the Martian equator, carbon dioxide concentration 95.3%... All parameters match the actual measured data from the Zhurong lander." The technician's voice came through the intercom system, tinged with suppressed excitement.

Lin Dong stood in front of the observation screen, his fingertips unconsciously stroking the old coin in his pocket—the only possession he had when he first arrived at the courtyard house. The coin's edge was smoothed by time, yet it was like a nail, anchoring him to every step he took from "survival" to "building a future."

On the observation screen, the "Hongxing-120" Mars breeding agricultural machine stands silently. Its fuselage is covered with a dark gold anti-radiation coating, its tracks use a shape-memory alloy frame, and the seeding head at the end of its robotic arm is as precise as an insect's mouthparts. Opposite it is a simulated Martian soil chamber: crimson particles "float" slightly under low gravity, like a layer of red mist ready to ignite at any moment. Conspicuous labels adorn the chamber walls—high iron oxide content, enriched sulfates, and near-zero organic matter.

He Yushui sat at the control panel, flipping through a thick stack of data manuals, the margins covered with dense red annotations. She looked up at Lin Dong: "First trial sowing begins. Target crop: Improved interstellar rice variety. Sowing depth 3 cm, row spacing 15 cm."

"Begin." Lin Dong nodded.

The robotic arm started, the seeding head rotated, and the first rice seed was precisely delivered into the soil. The next second, an unexpected event struck like a Martian dust storm—the disturbed soil particles instantly floated up, red mist enveloped the seeding head, and the rice seed, like a weightless sprite, "escaped" from its designated seeding position and slowly floated inside the cabin.

The observation room was deathly silent.

"Stop!" Yan Jiecheng suddenly raised his hand. He had just returned from Europe, and his eyes were still bloodshot from jet lag. "The soil's cohesion is too weak under low gravity, so ordinary sowing methods simply cannot hold the seeds. Moreover, iron oxide particles are magnetic, and long-term adhesion will wear down the bearings and clog the sensors."

He Yushui quickly pulled up the data curves, her face darkening: "There's something even more troublesome—high-salt, high-alkali environments will scorch the embryos, and lack of oxygen will inactivate nitrogen-fixing microorganisms. Our ecological bacterial agent worked fine in Earth tests, but in the Mars simulation chamber, its activity dropped by 70%."

Lin Dong didn't rush to speak. He simply put the old coin back in his pocket, turned around, and walked into the private lounge in the corner of the laboratory. As soon as the door closed, the pale golden halo of the Chaos Pearl enveloped him.

In space, a three-dimensional model of the Martian environment is rapidly generated: low gravity, high radiation, carbon dioxide atmosphere, red soil particles, salt distribution... Countless parameters flow like a galaxy.

He first tried "pressurized sowing," but the soil became compacted, preventing the seeds from breathing. He then tried "vacuum adsorption," but the sowing depth control failed. He then tried "viscous binding," but the adhesive formed droplets that floated under low gravity, contaminating the chamber. Each failure struck the screen like a hammer blow, and the simulated crop seedlings withered and turned yellow as soon as they sprouted.

Lin Dong stared at the red dust cloud and suddenly thought of the nature of Martian soil—it has a high iron oxide content and is naturally magnetic.

"Since you are affected by magnetism, then let's use magnetism to tame you."

He reconstructed the seeding head in a chaotic space: an outer ring of electromagnets was added, which were energized before sowing to allow iron oxide particles to adhere and form a "fixing ring" that "pins" the soil around the sowing position; the power was turned off and the magnetism was removed after the seeds were planted to avoid wear caused by long-term adhesion. The surface of the seeding head was covered with a self-cleaning nano-coating, making it difficult for non-magnetic particles to adhere.

Next came soil improvement. He disassembled and recombined the ecological microbial agent: retaining the core structure of nitrogen-fixing bacteria, he added salt-tolerant and radiation-resistant cyanobacterial branches, allowing the bacteria to slowly metabolize using carbon dioxide as a carbon source in an anaerobic environment; at the same time, he added "sulfate-reducing bacteria," which specialize in decomposing high-salt components. Finally, he added a "microcapsule shell" to the agent, which slowly ruptures upon contact with water, ensuring that the bacteria are released when needed most.

Finally, there's irrigation. Yan Jiecheng's proposed spiral pipe scheme was incorporated into his simulation: the spiral structure generates a weak centrifugal force, which, combined with shape memory alloy valves, allows the nutrient solution to flow stably even under low gravity, leaving no dead zones and preventing droplets from floating.

When he came out of the lounge, he had a stack of new blueprints in his hand.

"Modify the magnetic seeding head and add a ring electromagnet; microencapsulate the ecological microbial agent and implant it simultaneously; use spiral pipes and shape memory alloy valves for the irrigation system." Lin Dong slammed the blueprints on the table. "From now on, we're going to turn Martian soil from an 'enemy' into a 'tool'."

After reviewing the blueprints, Yan Jiecheng's eyes lit up as if they had been ignited: "This idea is absolutely right! It uses magnets to fix the soil and can also clear obstacles at the same time—the iron oxide particles around the seed head are first attracted away, which is equivalent to having a built-in dust removal function."

He Yushui also breathed a sigh of relief, her pen flying across the manual as she jotted down notes: "Microcapsule bacteria can solve the release timing problem, and spiral channels can solve the problem of fluid retention in low gravity. Brother Lin Dong, you've turned all the disadvantages of the Martian environment into our advantages."

Once the modification order was given, the industrial park began to accelerate like a giant machine.

Jia Dongxu's core component production base started operations overnight. The vacuum coating workshop was brightly lit, and magnetic seeding heads slowly rotated inside the coating machines, layer upon layer of dark gold coating covering the surface. Bang Geng and his team stood guard beside the production line, holding freshly printed valve parameter sheets, their voices hoarse from shouting: "This batch of shape memory alloy valves must be flawless! Even a micrometer of valve jamming would be a disaster on Mars!"

As Jia Zhangshi carried a pot of white fungus soup into the workshop, she still had a sharp tongue: "Don't all push yourselves too hard. If you ruin your health, who will grow crops for me on Mars?" But when she handed the bowls to each person, she was exceptionally careful, as if she were holding some precious instrument.

Yi Zhonghai also arrived, leaning on his cane. He didn't understand aerospace, but he did understand that "machines need to be durable." The old man stared at the structural diagram of the magnetic seeding head and suddenly said, "Won't your electromagnets retain magnetism after the power is turned off? If the residual magnetism doesn't dissipate, the soil will still stick."

One sentence enlightened everyone. Yan Jiecheng immediately added a "demagnetization circuit" and a small vibrator at the rear of the seed head to ensure that residual soil was removed.

Three months later, the second closed simulation test was launched.

On the observation screen, the magnetic seeding head approaches the soil, the electromagnet hums, and the reddish particles, as if held down by an invisible hand, quickly gather into a "red ring" around the seeding position. The seeds are precisely delivered to a depth of 3 centimeters, and the soil is covered and compacted in one smooth motion. After the power is cut off and the magnetization is deactivated, the seeding head is lifted cleanly and neatly, without a trace of red mist clinging to the robotic arm.

"Seed depth error 0.2 cm, seeding position offset less than 1 cm." The technician reported the data, his voice trembling. "It's a success... It's really a success!"

For the next week, the entire observation room was as quiet as if it were a vigil. Everyone stared at the red soil, afraid that even a heavy breath would disturb the seedlings.

On the morning of the seventh day, the first tender green improved rice seedling broke through the red soil, its cotyledons unfolding like tiny scissors.

Thunderous applause erupted in the observation room. Some people slammed their fists on the table in excitement, while others' eyes welled up with tears. He Yushui leaned on Lin Dong's shoulder, her voice as soft as if afraid to wake a seedling: "We did it."

Lin Dong didn't laugh immediately. He stared at the green on the screen, and suddenly thought of the winter in the courtyard house—back then he struggled for a bite to eat, and now he could make life sprout in simulated soil on another planet.

The announcement was like a stone thrown into the world.

Representatives from the UAE's space agency arrived at the industrial park that day, bringing soil samples from the "Dubai Mars Agricultural Simulation City" and a cooperation agreement. The person in charge shook Lin Dong's hand, speaking rapidly: "We want the world to see that Mars is not a dead zone. Your agricultural machinery is the key."

ESA also extended an invitation to deepen cooperation, hoping to connect Red Star's closed-loop ecosystem with Europe's Mars habitat to create a "self-sufficient interplanetary agricultural community".

Yan Jiecheng once again led the charge. This time, his team included several young faces—graduates from the Red Star Agricultural Machinery Technical College, and Lin Xiangyang, who was already in junior high school.

When Lin Xiangyang entered the laboratory with his schoolbag, he was stopped by the security guard: "Little boy, you can't go in here."

Yan Jiecheng patted him on the shoulder: "He's not a kid, he's from our data recording team."

Lin Xiangyang's task was to record data on-site from the "soil stratification detection device": humidity, salinity, and microbial activity at different depths. The child was hunched over the observation screen, as focused as Lin Dong had been years ago, and even wrote a sentence in the report that made everyone laugh and cry: "I suggest adding a 'Mars weather forecast' module to the seed head, otherwise it will be a big problem when a dust storm comes."

After reading it, Yan Jiecheng carefully wrote in the margin: "Included in the second phase of improvement."

Domestic "technology transfer" is also flourishing. The salt-tolerant bacterial agents and magnetic seeding technology from Mars Agricultural Machinery have been improved and applied to the treatment of saline-alkali land in Northwest China. In a 10,000-mu experimental field in Ningxia, the "Red Star-120B" agricultural machinery drove by, breaking open the salt crust and allowing the bacterial agent to be absorbed into the soil along with the seeds, resulting in thriving salt-tolerant wheat. Liu Lan and her science popularization team are stationed locally, compiling the operating procedures into an illustrated manual and even doing live broadcasts. In one video, she holds up a handful of plump wheat ears: "Before, nothing grew here; now, it can also grow hope."

In winter, the Dubai Mars Agriculture Simulation City was completed. At the opening ceremony, the "Red Star-120" drone operated smoothly in the simulated Martian environment, with rows of tender green seedlings standing tall in the red soil, like flags raised on a red wasteland. The Vice President of the UAE presented Lin Dong with the "International Space Agriculture Contribution Award" and said in his speech: "When humanity talks about Mars, we no longer just talk about survival, we begin to talk about harvest."

After the closing ceremony, Lin Dong stood on the observation platform with He Yushui and Lin Xiangyang. Inside the simulated city, the robotic arm moved slowly, and the nutrient solution flowed in the transparent pipes, like a quiet galaxy.

Lin Xiangyang held his own "Mars Agricultural Base Planning Map" in his hand, looking as serious as if he were doing an assignment: "Dad, I want to build the base near the equator, where the temperature difference between day and night is small. I also want to add automatic repair modules to the agricultural machinery so that it can replace parts by itself when it breaks down."

Lin Dong patted his head: "Okay. When you grow up, you can be the chief engineer."

He Yushui looked at the father and son and said softly, "Sometimes I wonder if we've moved too fast? From the courtyard house to Mars, it feels like a dream."

Lin Dong gazed at the starry sky, his tone resolute: "It's not about speed, it's about us finally having the ability to turn dreams into reality. As long as there's still land to cultivate, Red Star will never stop."

As night falls, Dubai's lights and starlight intertwine. In laboratories, agricultural machinery solutions adapted for asteroid mining have been quietly launched; in industrial parks, a new generation of space crops resistant to cosmic radiation are being cultivated; at overseas bases, technicians of different skin colors discuss blueprints, and Chinese agricultural machinery technical standards are becoming the common language of global interplanetary agriculture.

Meanwhile, in faraway Beijing, elderly people in traditional courtyard houses sat basking in the sun. Yi Zhonghai, flipping through the newspaper with the news of "Successful Trial Cultivation of Martian Crops," couldn't stop smiling; Liu Haizhong wrote the four characters "Red Star Expands the Universe" in bold calligraphy; and Yan Bugui transformed his bookstore's window display into a space science popularization section.

They may not understand the soil parameters of Mars, but they all understand one thing—that young man who left the courtyard house back then truly sowed "hope" to a more distant place.