I (Ning Liu) have a deep scheming mind. My sect was destroyed and I lost my family as a dog. I vowed to be the number one demon in the world. He (Gui Ming) is a proud man of righteousness, his father and brother are both dead, and he will have a blood feud that will never end.
They traveled together and returned home together, starting their spiritual training in the world of mortals.
(No system, no blood, no cliché.)
Intention: If you don't punish evil, how can you promote goodwill? How can you know the depth without personal experience?