Luohu did not underestimate the Xiantian Great Formation before him. After all, it used three Top-grade Innate Spiritual Treasures as its formation eyes!
Moreover, the Dragon Palace serving as the formation's foundation was no ordinary palace. It was also a Postnatal Supreme Treasure comparable to a Top-grade Innate Spiritual Treasure!
Clearly, this Dragon Palace had been refined after the world's creation.
However, postnatal spiritual treasures were not necessarily inferior to Innate Spiritual Treasures!
What was more, this Dragon Palace was a top-tier Postnatal Supreme Treasure. Though it could not compare to an Innate Supreme Treasure, it was barely comparable to a Top-grade Innate Spiritual Treasure.
It simply had not undergone the transformation from postnatal to innate. Otherwise, this Dragon Palace would definitely have become a top-tier Top-grade Innate Spiritual Treasure!
As the homeland of the Dragon Clan, the Dragon Clan had certainly put considerable effort into refining this Dragon Palace.
It had later been nurtured by Ancestor Dragon and the Dragon Clan's many Grand Unity Golden Immortals, making the Dragon Palace immensely terrifying and powerful.
However, compared to the Immortal Slaying Sword Formation, this Xiantian Great Formation was clearly somewhat lacking.
Furthermore, whether a formation could unleash its full power depended on its master!
The instant Luohu brought out the Immortal Slaying Sword Formation, the Dragon Palace formation before him activated automatically, immediately alerting Candle Dragon and the Dragon Clan's five Grand Unity Golden Immortals.
Although Candle Dragon did not know who the enemy was, he knew what mattered most.
Thus, Candle Dragon directly took control of the Dragon Palace formation.
With someone presiding over the formation, the Dragon Palace formation immediately emitted incomparably brilliant and dazzling Great Dao radiance.
The other five Grand Unity Golden Immortals also rushed at once to the three formation eyes, taking control of the