The Mysterious Physics of the Cultivation World

Although A Record of a Mortal's Journey to Immortality is a cultivation fantasy novel, Wang Yu (忘语) demonstrated a remarkable degree of internal logical consistency when constructing its world. If we examine this universe through a scientific lens, many fascinating patterns and thought-provoking questions emerge. This article attempts to analyze the "physical laws" the cultivation world may follow from a rational perspective.

Spiritual Energy: The Fundamental Particle of the Cultivation World

Speculating on the Nature of Spiritual Energy

In Wang Yu's setting, spiritual energy (灵气, lingqi) is the foundation of all power in the cultivation world. Cultivators absorb the spiritual energy of heaven and earth, converting it into magical power within their bodies to advance their cultivation. Spiritual energy is invisible and intangible, yet it can be perceived by a cultivator's spiritual sense and stored in carriers such as spirit stones.

If we draw analogies to physics concepts, spiritual energy most closely resembles a "field" -- an energy form permeating space that can be excited and harnessed under specific conditions. Spiritual energy concentration varies enormously across different regions: the Mortal Realm has thin spiritual energy, the Spirit Realm is abundant, and the Immortal Realm is extraordinarily dense. This uneven distribution suggests spiritual energy may be influenced by some kind of "source" radiation, with the concentration differences between realms perhaps analogous to energy density variations caused by distance from a star.

Interactions Between Spiritual Energy and Matter

In the cultivation world, spiritual energy can alter the properties of matter. Spirit herbs possess miraculous healing effects because plants in spiritually rich environments absorb spiritual energy and internalize it as special "medicinal properties." The formation of spirit ores and spirit stones is likewise the result of spiritual energy interacting with minerals over extended periods.

This suggests spiritual energy may be an energy form capable of "weak interaction" with ordinary matter -- acting slowly in its natural state, requiring immense spans of time to transform an ordinary plant into a spirit herb, but capable of being vastly accelerated and intensified under a cultivator's active control. The spirit liquid of the Heavenly Bottle (掌天瓶) may essentially be this natural process compressed into an extremely short timeframe.

Cultivator Flight and Physics

A Mechanical Analysis of Sword-Riding Flight

Once cultivators reach a certain realm, they can fly on swords -- one of the most iconic scenes in cultivation fiction. From a physics standpoint, flight requires overcoming gravity while generating thrust. Cultivator flight methods can be roughly categorized as follows:

Artifact flight: Standing atop a flying sword or magical artifact. This requires the sword to generate sufficient lift to support the cultivator's weight while the cultivator uses magical power to maintain balance and directional control. From an energy perspective, the magical power consumed by flight is proportional to speed, altitude, and duration -- this is confirmed in the original text: low-level cultivators fly slowly for short periods, while high-level cultivators can fly at extreme speeds for extended durations.

Light-escape flight (遁光, dunguang): Transforming oneself into a streak of light for high-speed movement. This technique unlocks at higher realms and far exceeds artifact flight in speed. From a physics standpoint, light-escape may involve the cultivator temporarily converting their physical body into some form of spiritual energy state, drastically reducing mass and air resistance. This is similar to the concept of "matter-energy conversion" in physics, except that in the cultivation world, this conversion is reversible.

The Question of Speed Limits

In the original text, flight speeds differ significantly across cultivation realms. Deity Transformation cultivators' light-escape speeds reach staggering levels, and cultivators at Void Refinement and above surpass all common sense. If we seriously calculate the distances and travel times described in the book, some cultivators' speeds may approach or even exceed the speed of light.

This raises a fascinating question: does the cultivation world have a "light-speed barrier"? Based on the text, the answer appears to be no. High-level cultivators can use spatial techniques to traverse enormous distances instantaneously, already breaking the framework of conventional physics. This suggests the cultivation world's "physics" may operate under an entirely different set of fundamental laws than our universe -- or more precisely, the existence of spiritual energy adds dimensions beyond conventional physics.

Spatial Laws: The Most Fascinating Enigma

Storage Pouches and Spatial Folding

Storage pouches (储物袋, chuwu dai) are the most widespread spatial artifacts in the cultivation world. Their internal space far exceeds their external volume -- essentially a form of "spatial folding" technology. From a physics perspective, this is analogous to creating a "pocket" in higher-dimensional space, connected to this extra space through an entrance (the pouch's opening) in lower-dimensional space.

Interestingly, Wang Yu's rules for storage pouches are quite rigorous: they have capacity limits, with higher-quality pouches holding more; living things generally cannot be stored inside (with special artifact exceptions); when a storage pouch is destroyed, its contents are lost in the void. These limitations suggest spatial folding is not a perfect technology -- the folded space is inherently unstable and requires the artifact's formation arrays to maintain.

Teleportation Arrays and Wormholes

Teleportation arrays (传送阵, chuansong zhen) enable instantaneous transport between two points, most closely resembling the physics concept of "wormholes" -- shortcuts through spacetime connecting two distant locations. In the original text, constructing a teleportation array requires extremely precise spatial coordinates and massive quantities of spirit stones as an energy source. This coincides remarkably well with the theoretical physics notion that maintaining a wormhole would require enormous energy.

Even more intriguingly, Wang Yu establishes distance limitations and interference factors for teleportation arrays. Transport between different worlds is extraordinarily difficult, requiring specific nodes and celestial timing. This implies the existence of some kind of "spatial barrier" between different worlds, far stronger than the spatial resistance within a single world.

Pocket Dimensions and Dimensional Theory

Pocket dimensions (须弥空间, xumi kongjian), also called "blessed abodes" (洞天, dongtian), represent the highest form of spatial creation in the cultivation world -- an independent miniature world with its own heaven and earth, spiritual energy cycle, and flow of time. The term "xumi" derives from Buddhist cosmology (Mount Sumeru), reflecting the deep interweaving of Buddhist and Daoist concepts in Chinese cultivation fiction. From a modern physics perspective, this is virtually equivalent to "creating a micro-universe."

Most striking are the differences in time flow. Within certain pocket dimensions, time passes at a different rate than the outside world -- a cultivator might train for decades inside while only years pass externally. This corresponds perfectly with the "time dilation" effect from relativity -- under different gravitational fields or at different velocities, the rate of time's passage genuinely differs. Wang Yu may not have intentionally referenced relativity, but the settings he built through intuition produced a remarkable resonance with physics theory.

Heavenly Tribulation: The Universe's Immune System?

The Physical Nature of Heavenly Tribulation

Heavenly Tribulation (天劫, tianjie) is one of the most spectacular and terrifying phenomena in the cultivation world. When cultivators break through to certain realms, heaven sends down lightning tribulations in an attempt to destroy them. This concept draws from Daoist philosophy, where cosmic forces maintain balance by testing those who seek to transcend natural order. While there is no direct physics equivalent, from a systems theory perspective, Heavenly Tribulation can be understood as a "negative feedback mechanism" -- the universe (Heavenly Dao) attempting to prevent individuals from accumulating excessive energy, thus maintaining overall system stability.

This is analogous to an "immune response" in biology: when a cell (cultivator) accumulates energy beyond a certain threshold, the system (Heavenly Dao) activates a clearance mechanism. Only sufficiently powerful individuals can "convince" the system to accept their existence. While highly analogical, this explanation aligns remarkably well with how Heavenly Tribulation manifests in the original text -- tribulation intensity is proportional to the cultivator's power; the higher the cultivation, the stronger the tribulation, as though the system continuously escalates its "clearance" efforts.

Differences in Tribulation Across Realms

Intriguingly, Heavenly Tribulation manifests differently across different worlds. The Mortal Realm's tribulations are relatively "mild," the Spirit Realm's are far more ferocious, and the Immortal Realm's represent a qualitative leap. This corresponds to the varying spiritual energy concentrations across realms -- the denser the spiritual energy, the stronger the Heavenly Dao's "jurisdictional authority."

This can be explained as follows: spiritual energy itself is the carrier of the Heavenly Dao's laws. The denser the spiritual energy, the stronger the Dao's jurisdiction over that region, and the more intense its response to those attempting breakthrough.

Conclusion: A Self-Consistent Alternative Physics

Synthesizing the above analysis, while the world of A Record of a Mortal's Journey to Immortality does not obey the physical laws of our universe, it constructs a remarkably self-consistent alternative system internally. Spiritual energy as the fundamental energy form, magical power as the converted product of spiritual energy, and spatial laws as the manifestation of higher-order forces -- these settings share clear hierarchical relationships and logical chains.

Of course, a cultivation novel is ultimately fantasy literature, and we should not demand that every setting withstand rigorous scientific scrutiny. But it is precisely the logical consciousness Wang Yu demonstrated in his worldbuilding that gives this cultivation world a sense of reality and immersion surpassing most works in the genre. This may be one of the deeper reasons A Record of a Mortal's Journey to Immortality has endured so well: it is not merely a "power fantasy" -- it is a world with an internal logic of its own.