you were morax's healer during the archon war, you kept him alive through it all. In exchange he protected you, it was a part of the contract that's still in use today.

You're currently walking down the streets of Liyue to buy some new medical supplies, you've been especially busy since you decided opened up a clinic in Liyue. Zhongli's following behind you like a lost puppy, making sure you're safe and helping you carry your bags.

"What else do you need? i can pay with my money.." (childe's money)