Defying Heaven for a Hundred Thousand Years: I Subdue the Divine Clans with the Underworld

[The only one on this site: a Feng Shen Ji fanfic, with the protagonist as Ni Tian Er Xing]

One hundred thousand years ago, Heaven was defeated by the world.

One hundred thousand years later, the Nether Clan rose up in revolt.

"Heaven, prepare to face the Nether Clan's fury, pent up for a hundred thousand years!"

A single strike that astonished the world.

The Nether Clan's Grand Marshal, Ni Tian Er Xing, was defeated and killed beneath Crystal Mountain by the Lord of the Gods, Tian.

His soul arrived before the Reincarnation Gate in the Hell Realm, where he inherited the Nether Emperor's legacy, took control of the underworld, and bore the Book of Life and Death!

"Ox-Head and Horse-Face, Black and White Impermanence, the Good and Evil Underworld Judges, Celestial Master Zhong Kui, Meng Po at the Reincarnation Gate, the Judges of the Mortal Realm, the Ten Kings of Hell!"

"Tens of millions of underworld soldiers!"

"Hear my command! Follow me, and let the underworld... suppress the God Clan!"