Using tribulation lightning as firewood.
Using Origin Flame as the furnace fire.
Tempering the Origin Dao Foundation from beginning to end.
Doing this required neither a place rich in spiritual energy nor one that was absolutely safe, but a place where the laws were sufficiently pure, ancient, and complete.
The Star Vein Source Law was singular, and the Temporal Barrier was safe.
But it would weaken the laws of tribulation lightning as well, equivalent to reducing the firewood that could be fed into the Origin Flame.
The Primordial Thunder Pool was fierce enough, but Chaos Force was too turbid. It was suitable for tempering the body, not for melting the Dao.
As for the Azure Emperor's Back Garden, it only partially fit. Vitality held absolute dominance there, and its system was not balanced.
Therefore, what Xu Changqing needed was a balanced cycle of creation, Order, and Terminus, not merely the Life Law.
The Star Core Abyss was different.
Every Star Core fragment left behind after ancient stars had fallen had fully undergone the entire process of birth, burning, collapse, and demise.
From unstable nebulae to blazing stars, from steady radiance to final contraction, until they ultimately became cold, silent remains.
This was a complete causal chain, from creation to termination.
It was practically tailor-made for his Origin Dao Cycle.
More importantly, these Star Core fragments had accumulated for countless tens of thousands of years. Their laws had stabilized to the extreme; they were neither as uncontrollable as Chaos fragments nor as gentle and ineffective as the Temporal Barrier.
Xu Changqing had suppressed himself at the Spirit Transformation realm for far too long. After his breakthrough, his goal was not merely ordinary Early Void Refinement, but to make the Origin Dao leap from its current stage to become his foremost foundation