The Flaming Star Beast, The Abyss of Darkness

The Black Phoenix grandmaster handed over its divine spirit origin energy and became Meng Lei's mount in the end.

Yep, that's right, a Chief God-class mount.

Meng Lei said dispassionately, "You can now tell me what that thing is, right?"

The Black Phoenix grandmaster looked absolutely miserable as it replied, "That Nidhogg guy teamed up with a few other Chief Gods to seal me back then, and I was brought here after that. Originally, Nidhogg could've killed me, but that thing saved me at the critical juncture."

"Go on," urged Meng Lei.

Its voice muffled, the Black Phoenix said, "Barring any unexpected events, a lucky fellow like Nidhogg would never be able to comprehend supreme laws of nature and ascend to become an intermediate Chief God even in his entire life. In other words, he had already reached the end of his cultivation journey."

Meng Lei nodded lightly to that.