The fourth and fifth Dao Lords were siblings. The Matter Dao Lord was the elder sister, and the Energy Dao Lord the younger brother. They had clashed before in the sort of melodramatic plot dripping with blood.
They had wanted nothing more than to destroy each other, yet always reached out at the last moment and pulled the other back up. "Sister/Brother, you lost. It's time for you to admit your mistake."
There had even been times of extreme danger when both of them told the other to leave first, choosing to stay behind and deal with the pursuers themselves.
There were also situations where, faced with provocateurs, the still-weak siblings could not handle them alone and fell into peril!
"So did they bicker and fuse together?"
And so, they bickered and fused to their hearts' content, combining the powers of the two great authorities of matter and energy in their hands, crossing several major realms to instantly kill their opponents!
Whenever the two were fighting, even if they were in different places, upon hearing that someone was preparing to target or insult their sister/brother, they would sneer and strike. "You think you're worthy of laying a hand on him/her?"
"The two of you together are... uh, no, that's not right. They were siblings to begin with."
"What was that called... happy enemies?"
An Xiu did not know much about the rumors surrounding those two Dao Lords, nor did he dare to learn too much. He retained respect and awe toward his elders, and what he knew better were some later events.
The sixth Dao Lord was Myriad Transformation. After him, the living beings of the heavens could gain the ability to alter their forms through cultivation and other means, transforming their lifeforms. Undead-but-not-living lifeforms such as "zombies" and "undead"