The late-night laboratory resembled a hall forgotten by time, with only the low hum of cooling systems and scattered indicator lights on instrument panels flickering like stars in the darkness. Xiuxiu stood alone before the observation window of the cleanroom, gazing outside—not at the actual nightscape, but at a massive electronic screen on which a complex three‑dimensional structure composed of countless light points slowly rotated. It was a simulation of the core optical module for her team's latest‑generation High NA EUV lithography machine design: a colossal system consisting of hundreds of aspherical lenses, multilayer‑film mirrors, and micro‑actuators, requiring picometer‑level precision.
Had they succeeded? Yes. Just yesterday, the first batch of mass‑produced "String Light No. 2" machines was officially delivered. She stood on the globally watched stage, hearing waves of applause, watching flashlights cast her pale yet resolute face into a sculpted likeness. She spoke at length about technical parameters, production capacity planning, and supply‑chain coordination. But only she knew that when the symbolic giant lens was draped then unveiled with red silk, what welled up in her heart was not entirely joy—there was also a deeper, almost weary clarity. Was this already the Mount Everest that human engineering could scale in "carving" the path of matter? Using immensely complex machines, expending enormous energy to manipulate photons, layer by layer "etching" ever‑finer trenches and protrusions onto hard silicon wafers, like the most meticulous artisan wielding a giant hammer and chisel to carve a miniature ivory ball. This road seemed to have an end in sight. The physical limit stood like an invisible wall, quietly looming not far ahead. The formula of the Rayleigh criterion coldly announced the ultimate barrier of diffraction; the atomic structure of materials dictated the final precision of etching; the laws of thermodynamics ruthlessly squandered every joule of energy… Each tiny advance demanded exponentially greater effort and resources. It felt like an endless tug‑of‑war with the laws of nature, one that was destined to grow ever more arduous.
She raised her hand instinctively, fingertips lightly touching the cold observation‑window glass, as if trying to reach through it and touch something deeper behind the simulation. Yet her mind, untimely, recalled a fragment from a few days earlier: during an encrypted three‑person communication, Yue'er had been sharing her latest research progress, her eyes gleaming with a near‑fanatical light—a light Xiuxiu knew well, one that usually appeared only when she herself or Mozi faced a major technological breakthrough or a qualitative shift in financial models.
"Xiuxiu, Mozi, my field‑theory framework… it seems to be more than just description," Yue'er's voice trembled slightly with excitement; she didn't even use complex mathematical symbols but attempted to depict that grand conception in the plainest language. "It suggests that information, energy, and matter, at some most fundamental level, might be different facets of the same thing. There exists… a more underlying 'source code'. The universe appears not to have been 'built', but rather 'compiled' in accordance with some profound mathematical logic."
"Compiled?" Mozi had inquired with keen interest at the time, his thinking always quick to seize philosophical implications beyond commerce and models.
"Yes, just like when we write code," Yue'er nodded emphatically. "We define variables, set rules, then 'run' it, and a virtual world manifests within computational power. My equations… they seem to be describing that 'compiler' itself, or at least part of its interface. The form in which matter exists might be seen as a stable state of information, an 'instantiation' of underlying logic in spacetime…"
Back then, Xiuxiu had mostly felt happiness for Yue'er and marveled at her imagination, which transcended ordinary comprehension. But now, in this silent, late‑night laboratory, those words were like stones cast into a deep lake, their ripples only now truly spreading into the depths of her thinking.
**Information, energy, matter… different facets of the same thing… underlying source code… compilation… instantiation…**
These terms chimed like a string of keys in her mind, trying to open a door she had never thought to touch.
What was the essence of lithography? It used light as an information carrier to transfer a designed pattern (information) onto photoresist, then through a series of physical‑chemical processes (energy intervention), ultimately forming specific structures (material forms) on silicon wafers. This was a classic "information → energy → matter" conversion chain, an extremely complex, loss‑laden indirect process.
What if… what if Yue'er was right? If matter itself, at the most microscopic level, truly responded to some deeper "information instruction"? If there existed a way to bypass this cumbersome, noise‑filled, loss‑ridden "carving" process and directly "tell" matter to let it, according to our set "program", "assemble" itself into the structure we desired?
This thought struck like lightning, instantly cleaving through the chaos of Xiuxiu's thinking.
She turned abruptly and strode swiftly to her office terminal. Her fingers danced across the virtual keyboard, calling up the team's internal top‑secret file codenamed "Genesis". Inside were stored not proposals for improving existing technology, but some radical concepts regarded by the mainstream as "science fiction" or "far‑future". She quickly browsed, her gaze locking onto several sub‑projects previously deemed "lacking a technical foundation" or "unclear physical principles":
**Atomic‑probe manipulation and molecular assembly**: Using scanning tunneling microscope (STM) or atomic force microscope (AFM) probes to directly move and position individual atoms. Theoretically feasible, but its speed was despairingly slow—like building a city with embroidery needles—and limited to surface operations, unable to construct complex three‑dimensional bulk structures.
**DNA origami and self‑assembly**: Leveraging the complementary‑pairing properties of DNA molecular chains, designing specific sequences that fold themselves into predetermined two‑ or three‑dimensional nanostructures. This was a miracle of nature, demonstrating the powerful capability of molecular‑level self‑organization. But DNA itself was soft matter; its stability, conductivity, and other properties were far removed from semiconductor‑industry requirements, and how to integrate such delicate DNA structures into silicon‑based platforms on a large scale with high precision remained a huge challenge.
**Quantum‑dot and colloidal self‑assembly**: By controlling synthesis conditions, allowing nanoparticles (quantum dots) in solution to arrange themselves into ordered lattices or superlattices. This offered another bottom‑up approach, but in terms of precision, defect control, and pattern complexity, there was still a long way to go before manufacturing high‑performance integrated circuits.
All these paths pointed in the same direction—**atomically precise manufacturing**. Yet they were like blind men touching an elephant, each grasping a small part of the colossal concept of "self‑assembly", unable to see its entirety, much less harness it.
Xiuxiu leaned back in her chair and closed her eyes. Yue'er's words echoed once more: "…underlying source code… compilation…"
The key perhaps did not lie in specific technological tools—whether atomic probes, DNA strands, or colloidal quantum dots, they were merely "probes" or "carriers". The key was that "program", the "algorithm" that could drive matter to perform precise self‑organization, that "compiler" Yue'er spoke of, which connected information and matter!
Our current lithography technology was like writing a program in a high‑level language (the chip design), but having to translate it into the lowest‑level machine language (photons, chemical reagents, plasma) through an extremely bulky, inefficient "peripheral device" (the lithography machine and subsequent processes), with results full of unpredictable "Bugs" (defects).
Whereas ideal, ultimate manufacturing should be directly running that high‑level language program, letting the physical world—this "hardware"—respond instantly, presenting the outcome in a flash. We needed to find and master that "compiler"!
What would that "compiler" be? Some unified physical field? A deeper law hidden behind quantum entanglement? The "information‑geometric field" Yue'er tried to describe with her mathematical language?
Xiuxiu felt her heart pounding fiercely in her chest, the sound of blood rushing clearly audible in the silence. She realized she might be standing on an unprecedented boundary of thought. The ultimate form of lithography might not be "etching" at all, but "programming"! Directly writing the "source code" of matter!
This idea was too bold, too subversive, leaving her feeling slightly dizzy. This was no longer within the domain of engineering; it touched the foundations of physics, even the ontology of philosophy.
She needed to communicate, needed verification, needed another brain capable of understanding this insane conception. Almost without hesitation, she immediately opened an encrypted video line to Yue'er. She knew that in Princeton it was afternoon, but Yue'er, like her, was a rebel against temporal regularity.
The signal connected astonishingly fast, as if Yue'er had been waiting on the other end. In the holographic projection, Yue'er's figure materialized; she seemed to be in her study, with floor‑to‑ceiling bookshelves behind her packed with books and manuscripts covered in formulas. She wore a loose wool sweater, a trace of weariness on her face, yet her eyes remained clear and profound.
"Xiuxiu?" Yue'er sounded surprised, then asked with concern, "So late, you're still in the lab? Have you hit a snag?" She saw the familiar instrument outlines and that massive electronic screen in Xiuxiu's background.
"Yue'er," Xiuxiu's voice was somewhat hoarse with excitement; she even skipped the usual pleasantries, "I… I have an idea, one that might be utterly insane. It comes from what you mentioned last time… the field theory, about the unity of information and matter."
Yue'er's eyebrows lifted slightly, her body unconsciously leaning forward a bit, showing great interest: "Tell me."
Xiuxiu took a deep breath, struggling to organize the surging, not‑yet‑fully‑formed thoughts in her mind: "We've been using light, using various forms of energy, to 'carve' silicon wafers, like the most patient stone‑carvers, chipping away transistors bit by bit. We're racing against physical limits, but I know we're about to hit that wall." She pointed at the lithography‑machine simulation behind her. "I was thinking, what if… what if matter itself, at the atomic, at the quantum level, could be 'programmed'? If we could find a way not to forcibly alter it from the outside, but to input a segment of 'code', letting it self‑organize, self‑'grow' into the chip structure we designed? Like… like how cells divide and differentiate according to DNA instructions, eventually forming a complete organ?"
She paused, observing Yue'er's reaction. Yue'er did not answer immediately; her gaze grew even more focused, as if piercing through spacetime, examining the grand possibility behind Xiuxiu's words.
Xiuxiu continued, speaking faster: "We have some self‑assembly technologies now, like DNA origami, like colloidal crystallization, but they're too primitive, too limited, like children's building blocks, incapable of constructing systems as complex, precise, and powerful as a CPU. I was thinking, what we're missing is that most core… that 'meta‑algorithm' that drives all self‑organizing behavior? That 'compiler' you spoke of?"
"Just as life's DNA not only contains the code for building proteins, but also embodies a complete set of logic regulating timing, spatial positioning, feedback loops," Yue'er slowly interjected, her voice carrying the tremor of a researcher discovering new territory. "You're envisioning a kind… of non‑biological, universal 'material DNA'?"
"Yes!" Xiuxiu nodded emphatically, feeling she had finally found the precise vocabulary. "A kind of 'source code' that can instruct atoms, molecules to arrange and combine according to preset geometric topology and electronic structure! Light might no longer be the carving tool, but… but one of the carriers of this 'source code'? Or, does there exist a way more fundamental, more direct than light for 'programming'? Like… directly manipulating quantum states? Using entanglement for instantaneous information transmission and material reconstruction?"
The more she spoke, the more excited she became, her thinking opening wider; those technical bottlenecks that had troubled her before seemed to have possible work‑arounds within this new paradigm: "If we could master this kind of 'source‑code programming', then manufacturing chips would no longer require gigantic factories, complex optical systems, stringent vacuum environments, and chemical reagents that generate massive pollution. It might be completed in a device… well, perhaps called a 'material compiler'—starting from atomic powder or basic molecular feedstock, directly 'printing' a fully functional chip! Precision would be at the atomic level, material utilization would approach one hundred percent, and theoretically any possible material combination and structure could be realized!"
The vision Xiuxiu painted had far exceeded the cognitive scope of current industry, bordering on the mythical turning of stone into gold, or God saying "Let there be light" and there was light. Yet the logic embedded in her words resonated powerfully with the mathematical cosmology Yue'er had been exploring.
Yue'er remained silent for a long time; in the holographic projection, her gaze seemed fixed on the infinitely distant horizon, yet also as if rapidly performing complex internal calculations. In the laboratory only the constant low hum of the cooling system and Xiuxiu's own somewhat hurried breathing remained.
"Xiuxiu," Yue'er finally spoke again, her voice unusually calm yet containing storm‑like power. "Your idea… it might not merely change manufacturing technology; it's attempting to directly write the laws of 'existence'."
She paused slightly, as if searching for the most accurate expression: "In my framework, what I call the 'information‑geometric field' describes the space constituted by all possible physical states, and the interrelations between these states. This space itself contains the rules of 'change'. What you term 'material source code' might correspond to certain specific 'attractors' within this field, or paths defined by a particular set of 'connections'. The 'meta‑algorithm' driving self‑organization might be precisely the solution of the field equations under specific boundary conditions…"
Yue'er began using more specialized mathematical terminology, but Xiuxiu could follow her train of thought. One starting from the manufacturing limits of physical entities, the other tracing back from the deep structure of the mathematical universe—they had miraculously converged at this point.
"In other words," Xiuxiu's eyes shone brilliantly, "if we could understand and describe the 'field‑theoretic representation' of the chip structure we want, find its corresponding mathematical form in your 'information‑geometric field', then, in theory, there exists a method to guide matter to spontaneously evolve toward that state we desire by intervening in this field, or by inputting corresponding 'information perturbations'? Like… like imposing a tiny initial condition on a chaotic system, letting it self‑evolve into a complex ordered structure?"
"The analogy is apt, but perhaps more fundamental." Yue'er affirmed. "This isn't merely an initial condition; it's more like directly defining the system's 'objective function'. The difficulty lies in…" She slightly furrowed her brow. "How to translate macroscopic, functional chip design into microscopic 'field‑theoretic instructions' that determine material arrangement? This 'translation' process itself might be an extremely complex mathematical problem, its computational complexity perhaps not less than… well, not less than simulating the evolution of a miniature universe. Moreover, how to 'execute' this instruction in an actual physical system? We need to find the physical interface that can couple with this 'information field'. Atomic probes? Electromagnetic‑wave arrays of specific frequencies? Or… some more fundamental interaction we haven't yet discovered?"
Two women, separated by the vast Pacific Ocean, yet stood side‑by‑side on the same front line of exploration. They forgot time, forgot weariness, discussing back‑and‑forth—from the measurement problem in quantum mechanics to the quantum nature of chemical bonds, from the surface states of topological insulators to the control precision of superconducting qubits. Xiuxiu brought deep understanding of fine manipulation of the material world and intuition for engineering implementation, while Yue'er provided an overarching mathematical framework and theoretical insight that pierced through appearances.
They discussed so intently that when the laboratory's morning‑preparation chime gently sounded, heralding the start of a new day's work, the two only then abruptly realized nearly four hours had passed.
Outside (the real outside), the eastern horizon had begun to show the color of fish‑belly white, faint dawn starting to disperse the night.
"Day is about to break." Xiuxiu said softly, looking at the gradually clearer scenery outside.
"Yes…" Yue'er, in the holographic projection, also slightly tilted her head, as if able to sense the change in light here. "Xiuxiu, your idea… is astonishing. It shows me a… an immensely grand direction where my theory might land. This isn't merely the 'source code' of light; this might be… the 'source code' of matter, the 'source code' of creation itself."
Her tone brimmed with indescribable excitement and longing. Xiuxiu, too, felt a long‑absent tremor rising from the depths of her soul. This tremor differed from the sense of achievement after overcoming specific technical barriers; it was awe and exhilaration at glimpsing a route leading to unknown stars and oceans.
"We might spend our whole lives and still not truly realize it." Xiuxiu said candidly, yet her tone was exceptionally firm. "This likely requires not just technological accumulation, but fundamental breakthroughs in our understanding of the entire physical world."
"But so what?" The corner of Yue'er's mouth lifted in a clear yet powerful smile. "Remember what Mozi often says? 'Unity of knowledge and action'. Knowing where the direction lies is itself the most precious step. Besides," her gaze once again rested on Xiuxiu, filled with trust and encouragement, "if it's you and your team, if we add Mozi's resources and our collective wisdom, who can assert that we cannot light the first lamp on this road?"
Xiuxiu looked at Yue'er's eyes in the projection—eyes that seemed capable of containing the entire mathematical universe—and nodded heavily. Weariness surged over her like a tide, but a stronger force arose within her heart. She closed the communication; the laboratory fell back into silence, yet her inner world felt as though it had weathered a storm, filled with the debris of renewal and infinite possibilities.
She turned once more to face that massive electronic screen. On the screen, the complex lithography‑machine simulation still slowly rotated—precise, magnificent, representing the pinnacle of human industrial civilization. But in Xiuxiu's eyes, it seemed no longer the endpoint, but more like a starting point, a gateway to a deeper, more fundamental manufacturing revolution—the starting point of directly writing the "source code" of light, or rather, of matter.
Dawn filtered through the observation window, casting a faint halo on her face. She stood quietly, like a contemplative sculpture, her mind already sketching a brand‑new blueprint that transcended all existing technological paradigms. That blueprint's name, perhaps, would be—"Genesis".