Yi Chang was a sentient treasure born from chaos and cosmos essence, born not from the yin-yang of male and female but from the yin-yang of chaos and cosmos, such people are usually known as the child of heaven, their birth is always accompanied by great heavenly signs, they are no different from the birth of heavenly treasure, born with advantages over others as heaven favours them and usually they can't be killed as the heaven usually protect them, they can only be killed if they leave the world they are born into or they betray the world.
Yi Chang was born with the cultivation of yin-yang breaking and spent only 200 years to reach supreme thearch while others spent 5000 years, only to die while breaking through to deity realm.
 In the endless world, within the ancient forest on a mountain Yi Chang stood a very serious expression as he undergo through the 72 heavenly lightning tribulation to advance to deity and transcend to the heavenly realm he could feel poison in his body, a poison that can't be expelled as it was a poison made to be energize by lightning 'lightning embedding poison' a pseudo-king grade poison made from the blood of 3 lightning beast and the venom of the vaporing Python Thearch king 'a python that its breath alone is poison and everywhere it pass through dies which is prove of how poisonous it is, concocted together by an peak grade 9 alchemist with the assistance of three top tier grade 9 alchemist spent over 10 years concocting even with the help of the heavenly dao. Of course its not the strongest poison in the endless world but it's the perfect poison to use against Yi Chang as a 'chaos-cosmos being' all poison are ineffective on him until he was betray by the heavenly dao, it didn't want Yi Chang to leave the Endless World as chaos-cosmos being are usually considered part of the world itself and that is a major restriction to them as they are not allowed to leave the world they are created, but since Yi Chang forcefully want to become a deity and ascend to the heavenly realm, a higher plane, he was viewed as an betrayer, unappreciative child going against the heavens, all his advantage as the child of heaven were withdrawn, which are 'poison immunity, good lucks, undraining spiritual qi, breakthrough without any tribulation, e.t.c. he was then seen as a foe of heaven.
 After successfully going through the 72 heavenly lightning tribulation, the most aggressive tribulation ever witnessed in the endless world, he sat cross legged as he awaited ascension. His soul slowly arrive at the heavenly realm within the sea of ascension bathing in heavenly qi to transform into deity soul, only after his soul successfully transform into deity soul can his body also ascend.
It was during this period, was he suddenly attacked by 'the five supreme thearch of the five supreme powers of the endless realm 'the people he grew up with' although he expected it after he found a secret alchemy technique based on using chaos-cosmos being into medicine, usually noone dares to use such technique as heavenly dao will surely protect the chaos-cosmos being.
He expected it after he had been poisoned by the sect master of the alchemy pagoda, who gave him a pill and claim it to be a lightning adaptation pill, as the heaven tribulation will be very dangerous as he is going to challenge it as a foe of heaven not as a child of heaven , although he knew it was poison, he still took it hoping for them to have a change of mind, but he was left to be disappointed.
 He was attacked by the five supreme thearch of the endless world until his body became lifeless, as he couldn't respond in attacking without soul in his body and could only witness his body become lifeless with any lifeforce to energize his soul and his soul alone in the river of ascension with no means of lifeforce slowly diminishing, when suddenly a man appears amidst wind, just from the appearance and entry he knew this is no ordinary cultivator, it almost seem like he is the essence of wind itself.
"Boy, seems like your body has been killed and unable to ascend" the mysterious person man said
"well, I expected it, just hoping it wouldn't happen" Yi Chang signed, as the mysterious man walks close over the sea followed by wind, he said "then, you are very lucky to chance upon me, I have a secret technique with me here, which require deity sacrificing their world core to reincarnate or reborn. So I will advice to continue with bathing your soul with heavenly qi and quickly create a world, if you want it".
 Yi Chang was quite shocked, his eyes lit up as he heard this "If I am ever able to reincarnate, I will surely pay you back" he said as he took the scroll the mysterious man threw him, afterall there's nothing to loss, he then quickly begin to cultivate his soul with heavenly qi to create his world, he was able to create his world only to create his world core did he run out of soul energy and his soul extinguish into a whirlpool.
He could faintly hear a voice "boy, if you are lucky enough to reincarnate, remember my deity title is wind divine empyrean" the voice echoes.
 Yi Chang then suddenly found himself in a strange yet familiar place "non existence-existence" he subconsciously said. he could feel a very strange familiarity to this place a place filled with darkness and whirlpools where everything is interchanging, as blurry and chaotic instinctmemory comes to him.
"wait, I was not from chaos and cosmos of the endless world but from the chaos and cosmos of non-existence-existence the in-between of multiverses but his existence was from the endless world universe, so my soul extinguishing whirlpool was not disappearing but travelling to non-existence-existence, as i am born here" although these sort of comprehensions is too high for his present cultivation, he could still make little sense from it.
He was a being born from chaos and cosmos of non-existence-existence not from endless world, but he was forcefully bonded by endless world as hers as for the reason, he couldn't tell. He was shocked by his finding but the most urgent matter is to reincarnate as he wasn't dying in this place, but there was no heavenly qi or any type of qi in non-existence-existence, when he suddenly had an epiphany 'creating existence from non-existence' & creating non-existence from existence' something he has always had as he was an existence made from non existence and a non-existence from existence as he is presently in the state of the two, he then slowly circulate his dantian to take in all sort of existing and non existing energies then transform them to pure energy from non-existence to existence to complete his world core, as he successfully complete his world core. he then suddenly fell in darkness, as he falls into darkness he mutters "The Chaos-Cosmos Coherent Cultivation Technique"