Before Caelum reconstructed Yu Yan's body quickly assessed his prowess. He wanted to avoid missing any flaws that may enable him to use them to their full potential. Having them is different from mastery as it needs time to be used and refined in order to become stronger.
He began to reconstruct his Great Zenith Expanse inner world that was below his Nine world Yggdrasil. This world was an inner world formed from the condensation of his energy in the past and it had countless imperfections that Caelum needed to fix.
Using the Law of Destruction and Creation began to set another era for life formed slaughtering every civilization then began to circulate the law he had gained to reform them to become better.
It may seem heartless to mortals that someone is destroying their world but this is actually a gift as Caelum is making them stronger and better. They would not even feel any pain from the cycle and would live unaware of what happened.
Caelum felt slight pain seeing their death not only because of his connection to them but the 'potential' momentarily lost from their death.
Fortunately, his inner world was not linked to his body and instead connected to his Sea of Consciousness. This is the reason why he had been able to reform his Great Zenith Expanse.
Caelum went into his inner world then placed a pillar of law tablet where they were able to comprehend the law then at the upper realm place the Lesser Dao and Grand Dao.
Click!
Whoosh! Whoosh!!!
BOOOM!!!!
The sound was akin to placing the final piece of a puzzle that caused his Physical soul to reach a new state of comprehension that resulted in his aura flaring up before subsiding.
He is far from becoming legend rank yet the density and technique it contains far outclasses them.
'This young man is full of mystery. It is unlikely for him to use that technique. The only conclusion I have is that he is connected to the World Creator.'
Yu Yan watches him to the side witnessing the constant change and increase of his strength despite clearly not reaching even the silver rank. She thought that Caelum uses the gruesome technique of Spiritual Constellation technique where a person is able to be reborn into a new body at the expense of sacrificing many children.
Yet denied it as those who use that technique would have sickly pale skin and a deteriorating body. Therefore concluded that his someone connected with the World Creator as it was impossible to have this vast comprehension despite his youthful appearances.
Caelum's mind and soul were in a state of clarity seemingly becoming one. He is able to know more about mind and soul that causes him to conclude the necessity of Mind related Avatar.
'I need the blood of True gods…as well as countless souls of Empyreans."
He thought having discovered that the Asura Sutra could be revised and improved yet it was extremely difficult to do when the material is unavailable. Tales of Demons and Gods had no true gods nor empyrean to be used in his pages.
There were few words he knew where to find a few of them and would visit that world after finishing his journey in his current world.
"You seem to be troubled?"
He came out from his daze hearing Yu Yan call his name seeing her expression seem to have misunderstood something.
"No, I just discovered something yet unable to them as of right now."
"I see, are you going to begin reconstructing my body?"
Caelum only nodded in response, standing up from his position before going back to the black spring that had been completely drained by him. He descends into the river by using [Gravity Law] before arriving where a smaller naked version of Yu Yan could be seen in the fetal position.
It may be smaller yet the sheer density of the Fire Law around her that even Caelum admitted its intensity. The flames were unique and otherworldly that should not exist in the tiny world.
'Okay that's hot!'
He thought of getting a good look of Yu Yan's body seeing the flawless white skin and curvy figure. It was different seeing it personally.
'Hehehehe pun aside…..is this an Ancient flame? No, unlikely to be but….what is this burning point?'
Even the boundless knowledge regarding the information of immortals had left him wondering the origin of her intent flames. He tried using his Omniscient to find it but he left with nothing.
Unfortunately, Caelum Omniscient is unable to show him past only the future of parallel worlds. This is the reason why it is only a Pseudo-Omniscient and needed Omnipresence to fix its flaws. Though, he was able to apply Space and Time law to it yet would only have the same result.
Deep within Yu Yan's root of soul were burning shimmering light that blinded Caelum to unable to comprehend what they were.
'I'll put it aside for now and commence acquiring waifu!'
"I hope that young boy doesn't try anything with my body."
Yu Yan remained outside the black spring looking down at the river where Caelum was. She was anxious seeing it was impossible to fight back if he tried doing indecent things. The only thing she was able to do was to wait patiently then instantly cause her body to feel an unexpected sensation.
'Hyaah! W-What's going..haaa on!?'
Back to Caelum, he reaches out his hand before analyzing her body even deeper, getting more information regarding the mysterious constitution she had. It allowed him to conclude that her flames were fire akin to a progenitor.
Having an enormous collection of information thanks to the Inscription/runes/symbol Scripture letting him easily understand how to reconstruct her body.
He proceeded to use his fingers adding some intent to have [Calligraphy Intent] producing strokes in the air before placing them into Yu Yan's body that helped recover the lost Fire Law. Caelum began to reconstruct everything, placing a better foundation with his [Dao of Formation and Construction] enabling him to give her body that has more potential.
Caelum decided to add extra into her new body, opening his gate of Babylon getting a vial of blood pouring the golden glistening liquid into her body that instantly caused it to burst into flames forming a phoenix.
The Vial contained an essence of his own bloodline, the [Ancestral Nirvanic Phoenix] who would be beneficial to Yu Yan who had that mysterious light.
He circulated the bloodline to ensure it would allow her to easily use it. The alchemy scripture shows its worth when applying to bloodline fusion into someone else as it is similar to creating a pill and using the ingredients without flaws.
After it fused into her body began to expand, growing rapidly while he ascended back to the shore where Yu Yan looked at him flustered. She immediately composed herself then began to observe her new body made dumbfounded that someone was easily reconstructing her body.
Yu Yan then felt the sensation of her body returning and her strength was rapidly growing until an explosion of Fire law burst, evaporating the black spring and the spiritual goddess hovering at the center with her flame more beautiful than before.
Within her mindscape, countless images came and memories of the past came allowing her to regain some of her memory of where she came from. Her new bloodline began to react to her hidden constitution producing miniature sun behind her.
'Oh I did not expect her to reach 9th Heavenly fate!? That sun is her Fate Souls?'
Caelum was at the side observing the scene unaffected by the intense heat and took some meat to cook only for it to turn to ash.
Back to Yu Yan, she finished regaining her body then opening her eyes only to find the young man crying over some ash making sweat.
"...First of all, what did you do with my body? It seems to be far stronger than what I'm used to?"
"My meat…*Sigh* I only added more foundation to your body. Well...I must say your body is enticing this way."
Caelum smirked, letting Yu Yan realize she was naked and quickly use her Fire law to form a dress while blushing confused why she regained her mortal emotion. She wondered what he did to her that brought back her emotion.
"I'll be leaving soon so want to come with me?"