FINALLY completed this novel after about 300 hours of reading. It began to feel like a chore somewhere around chapter 900 or so.

There is a sh*t ton of loose ends. Like 90% of the characters introduced are never seen again even though there is heavy foreshadowing e.g one of the demon kings escaped with his soul intact, we never find out what happened to him. I know it's normal for characters to get introduced and then forgotten later on but at least give some closure. In this novel there's a ton of characters who get like single sentence descriptions, and then a few chapters later they're mentioned again but you've already forgotten who they are. A few characters like the MC's grandpa are reintroduced every so often just so they can pat him on the back "as expected of my grandson!" even though they have absolutely nothing to contribute to the story whatsoever. It is very weird that these useless characters are repeatedly mentioned just so you remember that they exist and are useless. I can't even remember what happened to his mom and dad since they're never mentioned again. It is constantly mentioned how the girls who turned him down earlier are regretting their decision because now he is strong. This is repeated every 5 chapters or so. It is very jarring and does not seem to serve any purpose. Am I supposed to feel sad for these girls that they didn't get to bed the MC? Most of the text is pointless like that.
Lots and lots of repetition. Often times one character will say one thing to one character and that same thing will be repeated again by another character to a different character, and then the author will reiterate the same thing yet again.
Lots and lots of the setting go unused. The actual "powers" used in the story are space, time, the 5 elements, and the "evil" powers. That's about it. Even though the narrator says there is an endless number of powers (or martial spirits or however they translated it), only a handful are ever shown in the story. In particular, the devouring power is apparently OP and beats everything else so nothing else really matters, which I think is pretty s*upid since in fights it's said "everything has a counter", which apparently does not apply to MC's OP power.
Also, this has been bothering me ever since I read Dark Blood Age (which is one of the worse CN webnovels out there) but:

"COUNTERS" IS NOT A SYMMETRIC RELATION!!!!

You can't have fire counter water and then have water counter fire at the same time! That makes no sense! If fire counters water, then if you have the same amount of fire and water then fire will win. And vice versa. I hate authors who can't keep track of something so simple as "X counters Y" rather than the other way round.
Too many pointless sexual/"intimate" moments with random women we see at most 3 times in the entire story (the encounters consist of conversations about some plot device or a few pages of s*x talk or ecchi, often interrupted by other people walking in). The MC has s*xual encounters with something like 20 different women at different points in the story and even though he has a "main" love interest, they barely spend any time together. Instead the MC spends more time with random women who appear for a few chapters and are never seen again, like that time he had s*x with 4 women in the city. It was very pointless and those women are mentioned only once or twice after that arc. It feels like all these women do is:

1. Stay a virg*n all your life, devote yourself to cultivating your power.

2. MC comes along and steals your v*rginity due to some bullsh*t contrived scenario like you got poisoned and the ONLY WAY to save your life is to have s*x with the MC, or you accidentally drank aphrodisiac and had s*x with the MC.

3. You are now a s*x fiend who can't live without MC's dick. Your entire life revolves around him and you think about him 24/7 for the rest of your life.

This same pattern is repeated throughout the novel and the MC has s*x with like 20 different women this way (the ones he didn't r*pe, at least), who become his companions 4 lyfe (actually not, they're never mentioned again after the arc ends).
It is often mentioned that the MC is supposed to be super wise, smart, cynical and yet he acts on his impulses all the time. Often he does not need to kill someone and yet he does because "she tried to kill me", then it turns out the person he killed was the daughter of some powerful cultivator who then goes on a rampage and kills a bunch of people close to him. For someone who is wise and smart he sure acts impulsively. He couldn't have just let her live. No. He just had to kill her and make enemies for absolutely no reason.
Most of the novel is just pages upon pages of useless backstory or boring fights.
Every fight goes like this:

Bad guy: You stole my woman! Prepare to die!

MC: She chose me of her own accord you cuck.

Bad guy: Let's see how you fare against my special weapon!

Bad guy proceeds to beat the living sh*t out of the MC

MC: Holy shit! I'm about to die!

Suddenly special power comes out of MC's soul and kills the bad guy in one hit.

MC: Phew! That was close!

MC wins all his fights via deus ex machina, like the ray of light that randomly appeared out of this treasure the MC happened to have at the time when the shapeshifter tried to kill him, or the demon that instantly got summoned from billions of km away when the MC was about to die. The magical ring also saves him on multiple occasions, as in a magical light comes out of the ring and kills the bad guy. It's very boring to have all fights won by deus ex machina and the MC goes into most fights without any planning. There is basically no tactics involved during fights at all. Even at the very final chapter where the Big Bad was revealed it was very anticlimatic and the MC wins via pure luck.

Big Bad: I planned this entire story out since billions of years ago when I dragged your soul into my universe.

MC: I can't die because I'm not from your universe.

Big Bad: f*ck. I lost.

The closure was terribad and in the end the MC can apparently bring people back to life, so he should bring back like people who was close to him and died hundreds of years ago right? I can't even remember how many people he wanted to bring back to life. In the end he only remembers a handful from the last arc. Also, he is apparently God now and can create and destroy life as he wants. Also he is going back to his universe but it will apparently take billions of billions of years. I don't even know how the laws of physics work in this universe. Is the author aware of entropy?
Overall it was much worse than I expected and just kept getting worse as we went deeper into the story. I kept on expecting exciting tactics (like in Dungeon Defense) or characters I actually care about (like in Reincarnator) but there was none of that. None of the characters are ever developed beyond "she loves the MC" or "she's a b*tch". They have no substance. The sentences go something like:

>MC is about to die but suddenly female #1241543 saves him but gets seriously injured while saving him.

>MC heals the girl and they have s*x afterwards. She has a smile on her face as they leave their hideout.

It is not developed beyond that and it is very jarring. The MC has s*x with tons of random girls and they all fall for him for no reason other than because they had s*x with him or he saved their lives once. They don't have hobbies, they have no personality beyond loving the MC. The MC and his love interests never discuss any tactics or exchange any ideas whatsoever. In fact all the dialogue in this novel is extremely boring consisting purely of plot exposition. "Did you know that MC did X?" "Wow! No way! I don't believe it!".
The author does not understand show not tell. An example is the "battle formation". So MC's faction knows powerful "battle formations", literally how to arrange troops in battle. Are these formations ever shown? Never. He tells us they have these powerful formations but never shows us, nor does he explain how or why they are superior. It's like saying MC is strong, but not explaining how or in what way he is strong.
All in all a very forgettable novel. On par with Limitless Sword God, but not quite as bad (not to the extent of forgetting about resurrection items since there are no resurrection items in this story - not until the last chapter anyway).
I would say the first few hundred chapters of Realms in the Firmament and Transcending the Nine Heavens are much better than this, so if you want a CN webnovel I would recommend those over this one.

i like his unique martial spirit, the healing and taking qi from dead people, and how he can get a backslash too :) also how he's avoiding that backslash is hilarious (sex)