Seeing that the young man is gradually recovering from his extremely pale complexion after the fight with him, Zhang Tian, despite being an existence who had witnessed a lot of things in his life as an ascender already, couldn't help but feel amazed by the rate of regeneration the young man has.

'Is it really only from Immortal Energy and his ability?' wondering to himself as he had already seen what this mystical energy can do to an individual, the Twisted Principality of Permanence asked to himself out of sheer wonder, thinking whether he had encountered something even just remotely similar to such case before.

Realizing that he does not, in fact, encounter a recovery ability of such magnitude yet, he couldn't help but entertain a question to himself; Just what sort of monstrous rank does this young man's ability reached?

Knowing that if Azrael doesn't want to tell him, then it would be none of his business though, the Twisted Principality, despite all his curiosity, merely shrugs his shoulders as he shakes his head, thinking that he shouldn't really be all too concerned about the rank of someone else's ability, skill or even technique.

After a few more minutes of mulling to himself about such things and the likes, Zhang Tian finally felt the breath that the young man is exuding already starts returning into a solid, completely stable one that he had before their previous fight starts, the Twisted Principality approaches and starts scanning the young man's body from head to toe, finally nodding in satisfaction as he confirms that he is already completely recovered right now.

"That's really impressive, even in my standards, and that says a lot…" the towering man said with a piqued look on his face as once again, his mind wanders back to the curiosity of what kind of rank this young man's ability possesses, albeit already having some guesses to what rank of ability it is.

'It should be SS-Rank at the very least, and if his ability is beyond that… then he might reach that level in the future…' recalling that the number of existences who had acquired SSS-rank abilities can be counted with only the hands, the massive monster smiles in excitement at the prospect of training such monstrous individual before his rise, something that will most likely make the world remember of his story even if he should meet his own demise with this young man's hand.

With this prospect in mind, along with the fact that he realizes that Azrael's ability can handle far more damage than he had initially thought, Zhang Tian then decided that he will push the young man even further when he is training him, the maniacal smile on his face as he thought so making the young man feel like he is about to be thrown into a world of pain.

Even with these thoughts in mind though, Azrael still decided to continue through, recalling once again that an opportunity like this is not something that he can just encounter every day.

"Should we start now?" looking at the towering figure of the Twisted Principality of Permanence with determination in his eyes, Azrael asked with gritted teeth as he start feeling like the air around him turns heavier once again, his blood thickens as his muscles contract, the weight of his entire body ever so increasing as he felt like it is getting harder and harder to move through every moment passing.

Feeling like he is in a pit of quicksand preventing any sudden or extreme movements, Azrael realizes that his body, once again, starts turning into stone just like how it does from when he just arrive in the area, the only difference is that the potency of this petrification merely seems to be pushing his body to its limit compared to the previous one where it is just practically killing him.

Experiencing this change, he as well, manages to figure out some of the features of this monster, or rather, individual's ability, the fact alone that he is capable of completely changing the state, power, area and other possible property of his petrification making the young man think that this is such an absurdly versatile ability as well.

Still, despite feeling that it is quite impressive, should he be offered the chance to acquire such ability trading one of his, he wouldn't even think for a moment before he sdeclines such offer.

"Alright, this seems to be your limit now, young human, I suppose you can take your time getting used to this amount of power…" Zhang Tian goes on without even explaining why he is doing such thing currently, the only thing that Azrael is sure of being the fact that it Is truly a part of his training, no matter how absurd it is, given the seriousness that the Twisted Principality is exuding as if he is expending quite the significant effort to achieve such thing.

"Anyways, the reason why you can't handle such power is the fact that you lack the resilience, not mental or physical one but rather a special stats that will only appear in the most precarious of situations…" Zhang Tian starts explaining as he watches Azrael's body slowly turning into stone, before debris of rocks and other sand-like particles were expunged out of his body, from where it once was starts growing the stones again, this vicious, painful cycle were to repeat for thousands, if not tens of thousands of times for the entirety of this training.

"I can see that you already have Transcendence, quite surprising but well, given what sort of monster you are, that surprise factor diminishes a lot… a pity that you had yet to unseal it since if you do, you won't even need to rely on resilience anymore…"

He continued before he witnesses that the rate of petrification starts slowing down, Azrael's ability seemingly catching up to the rate now, making him smile in satisfaction as he felt like he will be able to teach this young man so much more than he had initially expected.