I'm doing engineering in the instance.

Chapter 12 - Database: Item 1

The burning sensation on the inside of my wrist has not subsided.

"Trials #002 - Summoning Confirmed - Countdown 72:00:00 - Please prepare."

Xie Chengzhou rolled up his sleeves and stood at the entrance of Yuan City for a while. He was assessing the message: a countdown of seventy-two hours, not an immediate transmission. He had handled many notifications of this format on construction sites—a "countdown" meant that the sender had provided a defined window, during which the recipient had free time to manage their time.

Seventy-two hours. Three days.

He wrote a line in his memo: "#002 Call Confirmed: 72-hour countdown, not immediate entry. Purpose of the window: Organize #001 data and establish an entry preparation framework."

He focused his attention on the wristband number, entering his personal space.

Personal Space - Construction Site Project Department

On the whiteboard, "#001·Wasteland·Clearance·SS Rating" was still there, the one he wrote when he last came in. The blueprints were spread out on three tables, the blueprint for G, the dotted box on the -B1 level, the column of characters he couldn't understand, and the "--G" in the lower right corner. He didn't touch the blueprints; he knew he didn't have enough information to process them right now.

He picked up the thermos from the ground, unscrewed the lid, and glanced inside—it was empty, but the smell inside was his, a mixture of stale tea and metal. He screwed the lid back on, placed the thermos on the folding table, then sat down, took out his memo, and turned to a new page.

He needs to organize #001.

It's not simply about reviewing what's been recorded again; it's about conducting a systematic structural analysis—laying out all the rules, like compiling as-built documentation on a construction site, clarifying the origin, triggering conditions, physical basis, and relationships with other rules for each rule.

At the top of the new page of the memo, he wrote: "Site #001 · Wasteland · Rule System Analysis · First Draft", and then wrote the date below.

There are four explicit rules.

He started with the first one.

"Rule 1: The factory monitor detects sound and triggers tracking if the threshold is exceeded."

Physical basis: Sound wave propagation, decibel threshold. This is a real physical phenomenon—any biological or mechanical system that relies on auditory perception has a trigger threshold; it reacts when the threshold is exceeded, and does not react when the threshold is below. The design logic of this rule is completely consistent with that of real-world voice-controlled devices, requiring no "special" explanation; it is simply the basic principle of acoustics.

In his memo, he wrote: "Rule No. 1: Acoustic triggering model. Physical basis: Reality. Design source: Real-world acoustic principles, not randomly constructed."

Rule 2: Stepping on chemical storage areas is prohibited; doing so will trigger tracking.

He paused on this rule. When he first read it, he thought it was a "safety" rule—"No stepping" is a common safety warning on construction sites; there is a risk of leakage in chemical areas, and stepping on them may damage containers. But the actual triggering mechanism is not "damaging the container," but "generating a sound."

The densely packed metal chemical storage tanks, reflecting off the ground in a relatively enclosed space, create a natural acoustic resonance cavity. Within this space, any sound is amplified; footsteps here can exceed the plant supervisor's perception threshold. The "No Stepping" rule is physically derived from this "acoustic resonance amplification effect."

In his memo, he wrote: "Rule No. 2: Acoustic resonant cavity effect. Physical basis: Densely arranged metal containers form a resonant cavity, with an estimated sound amplification factor of about 3-5 times. Design source: Acoustic characteristics of real industrial scenarios, not randomly constructed."

Rule 3: Activating the main switch can change the plant monitoring patrol route.

The power supply system controls the lighting, and the lighting affects the surveillance system's perception range. If the surveillance system's tracking logic relies on acoustic perception, then the lighting itself doesn't affect it. However, the main switch controls more than just lighting. He noticed in the factory that after the main switch was activated, the ventilation equipment in certain areas started, generating continuous background noise. This background noise "covered up" the sound signal in some areas, creating blind spots for the surveillance system. The patrol route changed because the surveillance system was adjusting its perception range to avoid noise interference.

In his memo, he wrote: "Rule No. 3: Noise Coverage Mechanism for Ventilation System. Physical Basis: The interference effect of background noise on acoustic perception. Main switch activation → ventilation equipment startup → continuous noise generation in specific areas → formation of blind spots in factory monitoring → adjustment of patrol routes. Design Source: Real industrial equipment linkage logic, not randomly constructed."

"Rule Four: Clearance Conditions - Main switch activated, everyone leaves the factory area."

The physical logic of this rule is the most straightforward: activating the main switch is a verifiable state change, and "everyone leaving the factory area" is a spatial location determination. When both conditions are met simultaneously, the epochal settlement is triggered. He had handled similar "completion acceptance conditions" on construction sites—a system completes debugging, personnel evacuate, acceptance standards are met, and the project is closed. The logic of this rule and the logic of construction site completion acceptance are structurally the same.

In his memo, he wrote: "Rule 4: Triggered by both state change and location determination. Physical basis: Direct mapping of the industrial system's final acceptance logic. Design source: Real engineering acceptance process, not randomly constructed."

There are four unspoken rules.

"Hidden Rule A: Factory surveillance is ineffective; it relies on vibration and acoustic sensing."

This was a conclusion he had verified in the first chapter. The factory supervisor passed by him three times; he stood still, and the supervisor did not react. He threw a pebble behind the supervisor, and the supervisor immediately turned around. Vision was ineffective, but acoustic perception was effective.

Physical Basis: Lighting conditions in an abandoned chemical plant. The plant has been abandoned for a long time, its lighting system is outdated, and some areas are almost completely dark. Under such lighting conditions, an entity relying on visual perception will lose a significant amount of information input and evolve alternative perceptual methods—acoustic and vibrational perception are the most effective alternatives in a dark environment. This is not a "system setting," but a perception pattern that an adaptive entity will naturally develop in a real physical environment.

In his memo, he wrote: "Hidden Rule A: A sensory substitution mechanism driven by light conditions. Physical basis: Sensory adaptation logic in low-light environments. Design source: Principles of real biological adaptation, not randomly constructed."

"Hidden Rule B: The Sound Amplification Effect of Chemical Areas (Hidden Version)."

Explicit Rule 2 states "Do not step on it," but doesn't explain why. Implicit Rule B is the physical foundation of Explicit Rule 2—the acoustic resonant cavity. He drew an arrow in his memo illustrating the relationship between these two rules: "Explicit Rule 2 → Physical Source → Implicit Rule B."

"Hidden Rule C: The movement of the plant monitoring equipment produces predictable vibration rhythms, and the location can be predicted in advance through ground sensing."

Vibration transmission characteristics of concrete floors. The mass and movement pattern of the factory supervisor are fixed, and the amplitude and frequency of vibration generated by each step are constant. Through the concrete floor, the attenuation coefficient can be estimated, and the distance can be deduced. This is a purely physical model—four variables: mass, velocity, ground elastic modulus, and vibration transmission attenuation coefficient; one output: location estimate.

In his memo, he wrote: "Implicit Rule C: Vibration transmission location model. Physical basis: Attenuation function of vibration transmission in solid media. Design source: Principles of real structural mechanics, not randomly constructed."

"Hidden Rule D: The main control room files contain content that exceeds the current context information level (Gu Zeyan's traces)."

He lingered on this rule for a longer period of time.

He could find the physical basis of the first three implicit rules, and they all pointed in the same direction: the inherent logic of the real physical scene. But implicit rule D was different. Implicit rule D was not a "naturally formed" physical law; it was artificially placed—someone placed a file in this scenario, containing content beyond the information level that this scenario should have, including a -B1 layer that he couldn't find in the factory.

In his memo, he wrote: "Implicit rule D: Artificially implanted information, not a natural physical law. Source: External intervention (G), not constitutive automatic generation."

Then he added a line below that line, writing very slowly: "Implicit rule D is different in nature from the first three implicit rules—the first three are inherent attributes of the scene, while the last one is an external intervention."

He placed the memo on the table, looked up, and glanced at the drawing.

- The dashed box at level B1. That column of characters he couldn't understand. "--G".

He had seen two kinds of drawings on the construction site: one was drawn by the design institute according to the specifications, and every line had its reason for being there; the other was drawn by the construction unit itself, used to record the actual construction situation, compare it with the design drawings, and mark changes.

What type of drawing is G?

In his memo, he wrote: "Judging the nature of G's drawings: ① Design drawings (G is the designer of the instance, and the drawings are design documents); ② Construction records (G actually surveyed this instance, and the drawings are the results of the measurements). The key difference between the two possibilities: - Is layer B1 'designed but not built' or 'built but not found'? To be verified. Method: Enter #001 or find traces of G in other instances for cross-verification."

He looked away from the drawings and down at the memo.

All eight rules were laid out before us, and the basic physics principles were all marked.

He glanced through the eight rules, then wrote a line on a new page of the memo:

"#001 Rule System Analysis - Core Conclusion: All rules within the copy have a physical and logical basis and are not purely random."

He paused on that line of text for a few seconds.

This conclusion does not mean "the rules are reasonable," but rather that **this copy was not randomly generated.**

A randomly generated system may occasionally produce rules with a physical basis, but all eight rules—four explicit and four implicit—have identifiable physical logical sources and all point to the same real physical scenario—the real physical characteristics of an abandoned chemical plant. This is not a matter of probability; it is a design.

Someone designed this copy.

It's not randomly generated; it's designed.

He added a line below the "Core Conclusion": "Inference: The experience is a capture of real historical scenes, and the rules originate from the inherent physical properties of the scenes. Designers only need to 'select the scene,' and the rules automatically apply. This means that designers must have a deep understanding of the physical scene—not an algorithm, but a human."

Then he wrote two words after that line: "To be verified".

He circled those two words and added a line next to them: "Verification path: ① Does the rule of the second copy also have a physical basis? ② Do the physical basis of different copies have a common design style (designer fingerprint)?"

He turned to a new page in his memo and wrote down the title:

"Rule Database - Rule 1"

Then write below:

Item Number: DB-001

Source copy: #001 "Wasteland"

"Entry content: The rules of the realm are based on physical logic and are not random. All verified rules can be traced back to the inherent properties of real physical scenes."

"Verification status: Single copy verification, pending cross-copy verification."

Confidence level: 70%.

Related entries: None (first entry).

"Note: If this conclusion holds true, it means that the designers of the experience are entities with physical knowledge, rather than random generation algorithms. G traces support this conclusion—G's understanding of the -B1 layer exceeds the level of information generated randomly."

He closed the memo, placed his hand on the cover, and remained in that position for about three seconds.

He established many databases on the construction site: material database, supplier database, and process database. The first record in each database is the most important because it defines the framework logic of the database—it determines how all subsequent entries are summarized, classified, and used.

This is the first record he made in this place.

On the cover of the memo, he wrote a line in small print with a ballpoint pen: "DB-001: Non-randomness".

Then he stood up, put the memo in his pocket, put the thermos back on the ground, flattened the four corners of the drawing, and walked out of his personal space.

The voice of Yuan City still lingers.

He stood near the entrance, put his hand in his pocket, and felt the heat on the inside of his wrist—it was still there, the "Experience #002·Summon Confirmation" status had not been canceled, and the window was still open.

He flipped to the last page of his memo and wrote a line at the bottom:

"#002 Pre-entry status confirmation: Star Source remaining 420 points, fault tolerance 4 times. Rule database DB-001 has been established. G drawing - B1 layer: archived, pending verification. Personal space: can be actively entered and exited, verified."

Then he added a line below this line:

"#002: New Site. Evaluation Prioritized, No Failure. Countdown: 72 hours."

He closed the memo and put his hands in his pockets.

Seventy-two hours.

He has taken on many new projects on construction sites, and each new project has a preparation period before it starts—checking blueprints, reviewing geological reports, understanding the client's true needs, and taking into account any predictable variables in advance. These 72 hours are the same thing: the preparation period before entering the site, not waiting, but work.

He didn't feel pressured by the number; he was familiar with it.

The sounds of Yuan City still lingered. Conversations, footsteps, the sound of something being put down somewhere. He stood there for a moment, pressing the number on the inside of his wrist—the warmth was still there, the words "72 hours countdown" were still lit up. No rush, he was steady.

He raised his head and looked in the direction of Yuan City.

Seventy-two hours later, he will enter a completely new scene he knows nothing about. He doesn't know what kind of scene it is, what the rules are, whether there are other people there, or what form the threat takes.

He knew only one thing: he had taken DB-001 inside.

If #002 also has a physical and logical basis, then this conclusion holds true.