The Xia Emperor and the Drifter had both relied on their own ultimate grand perfection attainments in the Dao of the Void, forcefully achieving the effect of "Voidification to the extreme" using only mysteries at the Chaos Realm level! As for how complicated it was to cultivate? They did not care. Creating it at all had already been extraordinarily difficult. Dongbo Xueying, strictly speaking, had a reference—the scale-armour secret patterns of General Mo Gu of the Destruction Devil Race.
Those scale-armour secret patterns had been naturally formed when the source world birthed the Destruction Devil Race. Simply put, they had been naturally nurtured beneath the "Supreme Rules."
Though the Xia Emperor and the Drifter were formidable, they still fell short compared to what the Supreme Rules had naturally nurtured. In terms of simplicity and ingenuity, they were a tier inferior!...