The Heaven and Earth Spirit Flame of the Heavenly Fire Palace had been left there by that Mahayana Existence. A clear statement had once been left in the Ancient Crane Secret Realm: if anyone advanced to the Mahayana stage, they could go to the Heavenly Fire Palace and attempt to subdue the Nether Lightning Heavenly Fire.
Kou Yuxin had not advanced to the Mahayana stage long ago—barely two hundred thousand years.
After he had just advanced to the Mahayana stage and stabilized his condition, he went to the Heavenly Fire Palace and paid his respects to the Nether Lightning Heavenly Fire, which was widely praised by the Mahayana Existence of the Qi Yang Realm.
At that time, however, the Nether Lightning Heavenly Fire was not in this sealed location of the Danxia Sect. It was in another underground magma chamber.
After that attempt, Kou Yuxin ultimately returned empty-handed.
The Nether Lightning Heavenly Fire was not something that could be touched casually. Although this Nether Lightning Heavenly Fire of the Heavenly Fire Palace contained impurities, its formidable properties were still difficult even for a Mahayana Existence to withstand.
Heavenly lightning was something every cultivator feared deeply. Even if one possessed a powerful magic treasure capable of resisting heavenly lightning strikes, the terrifying power that eroded the divine soul was enough to make anyone tremble.
And under the Nether Lightning Heavenly Fire's powerful suction, even a Mahayana Existence could hardly remain inside it for long.
The Nether Lightning Heavenly Fire could not be divided, nor could one approach it for long. With these two stubborn obstacles in place, even a Mahayana Existence found it difficult to employ any refinement technique against the Nether Lightning Heavenly Fire.
This time, Kou Yuxin had come to the Heavenly Fire Palace to seek the Nether Lightning