At the beginning of the original universe, there was actually still conflict between the two sides.
At that time, the Left and Right Heart Worlds treated the original universe as a neutral battlefield.
Ree Shil: "Neutral battlefield? Well... I've never heard of it."
"So how did the conflicts between the two sides eventually die down?"
Cunning: "You're asking the right god."
"Back then, although I was just an unworthy minion, I witnessed the entire process."
"Forget it, the details involve some secrets, and I can't let you know too much."
"In short, there were two people who pulled together two groups from the Left and Right Heart Worlds, and after a long period of mediation, they finally reached a peace agreement between the two sides."
Ree Shil: "Two groups? Are these the predecessors of the Left Heart Sect and Right Heart Sect?"
Cunning: "What are you thinking, how could it be?"
"The members of these two groups were all gods from the Left and Right Hearts."