The War God Xingtian, originally a powerhouse at the God King level. He was the Demon God second only to General Chiyou!
After the war between Jiuli and Yan Huang ended, He just broke through to God King.
He immediately challenged the Yellow Emperor.
After being beheaded by the Yellow Emperor with the godly Xuanyuan Divine Sword, He did not die.
Instead, He turned into a headless War God, with nipples for eyes and a navel for the mouth, and fought against the Yellow Emperor again.
In the end, He fell and was imprisoned in this hell.
This aspect of the Yellow Emperor's motive is interesting.
The opponent was a clear rebel and extremely strong, yet he was not killed but rather imprisoned in hell.
Similarly, the Demon Gods of Jiuli were also imprisoned instead of being executed.
Li Changhe speculated that by doing so, the Yellow Emperor was actually leaving behind strength for the future of humanity.