Unfortunately, over his decision, their argument increased to the point that eventually, there was a battle in the endless space that lasted for an eternity, before it ended with the sealing of the Second Ancestral God who accepted his defeat after getting a promise that the humans won't be erased.
A special tomb was created where the Second Ancestral God was sealed for eternity. And Long Chen felt as if he was the one who sealed him.
As promised, he let humans exist. Not only did he let humans live, but he also made them flourish. As time passed, he even became somewhat fond of humans.
Many times, he even came down to various worlds, one of which was the world where Demons and Heavenly Beings lived together.
That's where he taught the two species leaders some of the Knowledge of the Sealed Ancestral God, wanting that knowledge to live on.