They never got along. Somewhat at least.

Childe is the 11th Fatui Harbinger, and ever since they were added to the Fatui, it's been nonstop arguing.

They would mostly go their separate ways, but whenever they met, a battle always happened.

It was never a bloodthirsty battle. Just a battle to test their strength, yet they seemed to be marched in the term of skill.

While Childe was in Liyue visiting Zhongli, his eyes caught onto them, his blood instantly starting to boil.