What do you think?
Rate this book
The Undying Immortal System #4
Su Clan: A LitRPG Adventure
Continue this superb series soon!
542 pages, Kindle Edition
Published June 10, 2026
Ratings & Reviews
Friends & Following
Create a free account to discover what your friends think of this book!
Community Reviews
Displaying 1 - 9 of 9 reviews
June 16, 2026
Wearing
This is pretty good. Lots of new characters, new challenges, and even new solutions.
However, I'm getting tired of a series that makes so little progress. Stuff happens, but so little of it matters despite how many words are spent describing it.
This is pretty good. Lots of new characters, new challenges, and even new solutions.
However, I'm getting tired of a series that makes so little progress. Stuff happens, but so little of it matters despite how many words are spent describing it.
July 2, 2026
i used chat GPT to help develop the idea
Considering how we understand each memory is a neural network map if we were to make that map into three dimensional rune that contains many potential smaller runes that make up the memory if one was to be able to isolate that one then take that memory implanted into another, if they understood the rune structure.
treat this as a neuroscience-plus-sci-fi question: what would be theoretically required, what biology actually supports, and where the “rune/map” idea breaks down.
Theoretically: maybe in principle, but not with anything close to current science.
Your “3D rune” idea is a useful metaphor for an engram: a memory pattern stored across many neurons, synapses, chemicals, timing rhythms, and body/emotional context. Modern research supports that memories are distributed, dynamic neural ensembles, not one fixed file in one place.
To “implant” it into another brain, you would need to copy:
The exact active neuron network.
The synaptic strengths between those neurons.
The emotional/body-state tags.
The timing pattern of activation.
The person’s existing associations and meaning system.
Scientists have created false fear memories in mice by activating specific hippocampal engram cells with optogenetics, but that is not the same as copying a full human memory from one brain into another.
So, if someone fully understood the “rune structure,” they might be able to trigger, modify, or simulate a memory-like experience. But a true transplant would be extremely hard because memories are not isolated objects; they are woven into identity, prior experiences, language, emotion, and the whole nervous system.
Best answer: you could maybe implant a pattern that feels like a memory, but transferring the original memory exactly would require copying part of the person’s lived context, not just the neural map.
Consider the time aspect for chemical release being a fourth dimensional aspect of the rune Magic
Yes — that makes the metaphor stronger.
A memory “rune” would not just be a 3D structure. It would be a 4D pattern:
3D shape: which neurons/synapses are involved.
4th dimension: when neurotransmitters, hormones, and electrical rhythms fire.
So the memory is less like a carved symbol and more like a living spell being performed over time.
The “magic” would depend on timing:
glutamate strengthens connections
dopamine tags importance/reward
norepinephrine tags danger/alertness
cortisol can intensify stress memories
acetylcholine helps attention/encoding
sleep rhythms help consolidate the pattern
So to copy or implant the memory, you would not only need the neural map. You would need the sequence, like a song:
wrong notes = distorted memory
right notes, wrong timing = false or unstable memory
right structure + right timing + right chemistry = memory-like experience
In that sense, the rune is not a static object. It is a time-locked biochemical performance encoded in neural geometry.
Surrealistically it's more or less a controlled manipulation of the chemical structures at the time of the lease and a sequential pattern and time pattern simultaneously
That's an interesting way to formalize it. If we translate your idea into neuroscience terminology, you're describing a memory as having at least four interacting components:
Structural pattern: the network of neurons and synapses (the "rune's geometry").
Chemical state: the concentrations and locations of neurotransmitters, neuromodulators, and intracellular signaling molecules.
Temporal sequence: the precise order in which neurons fire and chemicals are released.
Dynamic evolution: how all of those variables change together over milliseconds, seconds, minutes, and even during later consolidation.
In other words, the "rune" isn't a static object—it is a dynamic attractor in the brain's state space. The memory exists not only in where activity occurs, but how the system moves through a sequence of states over time.
An analogy from music might help:
The neural connections are the instrument.
The chemical environment is the tuning and resonance.
The firing sequence is the melody.
The timing and rhythm are the tempo.
Remove any one of those, and you no longer have the same piece of music.
From a theoretical standpoint, if someone could perfectly control all four dimensions, they might be able to reproduce a specific brain state with remarkable fidelity. The challenge is that biology is extraordinarily complex: each neuron participates in many memories, the chemical environment is continuously changing, and memories are reconstructed—not replayed exactly—the next time they're recalled.
Your use of "rune" is an evocative metaphor because it emphasizes that a memory could be viewed as a symbolic pattern in a higher-dimensional space rather than a static physical object. In that framework, the "magic" isn't supernatural; it's the hypothetical ability to read and write those multidimensional patterns with complete precision. That idea aligns more with speculative neuroscience and computational theories of cognition than with current experimental capability, but it's a compelling conceptual model.
also i loved all the books so far. I enjoy getting lost in the thought of ideas your stories let me consider.
Considering how we understand each memory is a neural network map if we were to make that map into three dimensional rune that contains many potential smaller runes that make up the memory if one was to be able to isolate that one then take that memory implanted into another, if they understood the rune structure.
treat this as a neuroscience-plus-sci-fi question: what would be theoretically required, what biology actually supports, and where the “rune/map” idea breaks down.
Theoretically: maybe in principle, but not with anything close to current science.
Your “3D rune” idea is a useful metaphor for an engram: a memory pattern stored across many neurons, synapses, chemicals, timing rhythms, and body/emotional context. Modern research supports that memories are distributed, dynamic neural ensembles, not one fixed file in one place.
To “implant” it into another brain, you would need to copy:
The exact active neuron network.
The synaptic strengths between those neurons.
The emotional/body-state tags.
The timing pattern of activation.
The person’s existing associations and meaning system.
Scientists have created false fear memories in mice by activating specific hippocampal engram cells with optogenetics, but that is not the same as copying a full human memory from one brain into another.
So, if someone fully understood the “rune structure,” they might be able to trigger, modify, or simulate a memory-like experience. But a true transplant would be extremely hard because memories are not isolated objects; they are woven into identity, prior experiences, language, emotion, and the whole nervous system.
Best answer: you could maybe implant a pattern that feels like a memory, but transferring the original memory exactly would require copying part of the person’s lived context, not just the neural map.
Consider the time aspect for chemical release being a fourth dimensional aspect of the rune Magic
Yes — that makes the metaphor stronger.
A memory “rune” would not just be a 3D structure. It would be a 4D pattern:
3D shape: which neurons/synapses are involved.
4th dimension: when neurotransmitters, hormones, and electrical rhythms fire.
So the memory is less like a carved symbol and more like a living spell being performed over time.
The “magic” would depend on timing:
glutamate strengthens connections
dopamine tags importance/reward
norepinephrine tags danger/alertness
cortisol can intensify stress memories
acetylcholine helps attention/encoding
sleep rhythms help consolidate the pattern
So to copy or implant the memory, you would not only need the neural map. You would need the sequence, like a song:
wrong notes = distorted memory
right notes, wrong timing = false or unstable memory
right structure + right timing + right chemistry = memory-like experience
In that sense, the rune is not a static object. It is a time-locked biochemical performance encoded in neural geometry.
Surrealistically it's more or less a controlled manipulation of the chemical structures at the time of the lease and a sequential pattern and time pattern simultaneously
That's an interesting way to formalize it. If we translate your idea into neuroscience terminology, you're describing a memory as having at least four interacting components:
Structural pattern: the network of neurons and synapses (the "rune's geometry").
Chemical state: the concentrations and locations of neurotransmitters, neuromodulators, and intracellular signaling molecules.
Temporal sequence: the precise order in which neurons fire and chemicals are released.
Dynamic evolution: how all of those variables change together over milliseconds, seconds, minutes, and even during later consolidation.
In other words, the "rune" isn't a static object—it is a dynamic attractor in the brain's state space. The memory exists not only in where activity occurs, but how the system moves through a sequence of states over time.
An analogy from music might help:
The neural connections are the instrument.
The chemical environment is the tuning and resonance.
The firing sequence is the melody.
The timing and rhythm are the tempo.
Remove any one of those, and you no longer have the same piece of music.
From a theoretical standpoint, if someone could perfectly control all four dimensions, they might be able to reproduce a specific brain state with remarkable fidelity. The challenge is that biology is extraordinarily complex: each neuron participates in many memories, the chemical environment is continuously changing, and memories are reconstructed—not replayed exactly—the next time they're recalled.
Your use of "rune" is an evocative metaphor because it emphasizes that a memory could be viewed as a symbolic pattern in a higher-dimensional space rather than a static physical object. In that framework, the "magic" isn't supernatural; it's the hypothetical ability to read and write those multidimensional patterns with complete precision. That idea aligns more with speculative neuroscience and computational theories of cognition than with current experimental capability, but it's a compelling conceptual model.
also i loved all the books so far. I enjoy getting lost in the thought of ideas your stories let me consider.
June 15, 2026
we finally get a plot
It's been developing since the second book, but I'm positive that I extremely dislike the Mc. This book in particular, he's the worst. I believe the author tried to give him an air of gravitas and mystery, specifically to a particular group he was in charge of in this book; instead he came off as aloof and a big jerk. It feels like nothing is accomplished, and this book is where we actually start the real plot! 4 books in and we finally get a story instead of a man wondering about basically grasping in the dark for a path forward. I still want to see where this goes, but what he does to the people around him makes it hard to root for his success. He really sucks.
It's been developing since the second book, but I'm positive that I extremely dislike the Mc. This book in particular, he's the worst. I believe the author tried to give him an air of gravitas and mystery, specifically to a particular group he was in charge of in this book; instead he came off as aloof and a big jerk. It feels like nothing is accomplished, and this book is where we actually start the real plot! 4 books in and we finally get a story instead of a man wondering about basically grasping in the dark for a path forward. I still want to see where this goes, but what he does to the people around him makes it hard to root for his success. He really sucks.
July 1, 2026
I'm a big fan of this series, which adds a lot of depth to typical Cultivation tropes. I'm also a sucker for a Time Loop. Sadly, Book 4 was a step down in terms of quality. I was excited to see the MC go back to his roots, think more about why he's so obsessed with paying his debts, and begin to build a Clan, but he has become increasingly passive in a way I find frustrating. He just let's things happen to and around him, or else he doesn't bother to shore up his knowledge with the system or just generally learn things he might find useful. The focus of the story was also very narrow and it was quite slow - the whole novel felt like setup to the next one in a way I didn't love. That said, I am very excited for Book 5! I don't love this series any less, even if this was an in-between novel.
June 23, 2026
Mostly slice of life. This book focuses on the clan that Fang builds for himself so that he may get the karmic energy he needs. The book is pretty slow and a little odd in my opinion. It basically ignores most of his advantages and I don't really understand why. Saying more feels like spoiling the book but it is an odd decision in my opinion.
June 14, 2026
Great writing
The writing is well paced and interesting, the pacing is well done and the intrigue is enough to have you thinking you know whats going on but surprises you in enjoyable ways.
The writing is well paced and interesting, the pacing is well done and the intrigue is enough to have you thinking you know whats going on but surprises you in enjoyable ways.
June 16, 2026
This episode was mostly a town-building story. The author managed to keep it interesting with political manoeuvring. I'm keen to see how that town gets on once it reverts in time. Full of babies or are we going to break the rules.
June 25, 2026
Not up to par
The 4th book in this series was a bit of a drag and the cast of characters needed to wrap up the arc was out of control.
The 4th book in this series was a bit of a drag and the cast of characters needed to wrap up the arc was out of control.
July 5, 2026
loving this series.
Displaying 1 - 9 of 9 reviews