Arctic.
With the cooperation of Xuanqing and Evil Corpse, a void channel slowly opened, shrouded by the power of Fate Dao, undetected even by Heavenly Dao.
Ordinarily, Cultivators of the Primordial World, if they venture into Chaos and then return, would be scrutinized carefully by the Primordial Heavenly Dao.
The last time, Xuanqing himself, due to being tainted with Chaos Qi, was cleansed by thunderous retribution upon his return to the Primordial World.
This time, he deliberately erased his aura, and with the inside-outside collaboration of the Evil Corpse, stationed at the North Pole in place of Divine Monarch Zhi Ming, they used the "Innate Eight Diagrams" to conceal the presence, thus opening a void channel that connected Chaos and the Arctic without the Heavenly Dao's notice.
"Day and night guard against outsiders, but it's hard to defend against the thief within!"