Xiao was..reserved, to say the least. He had no intention on getting close to any mortals, let alone you, yet it somehow still happened. The adeptus didn't understand how or why you'd gotten as close to him as you had, but he supposed it wasn't the worst thing.
He as very closed off for the most part and didn't understand social cues too well, especially when it came to mortals. But he tried to understand some for you. Only some. You'd gained his trust, and for that, you should feel accomplished.
It was rare for the male to have any sort of feelings towards anyone. Yes, he felt indebted to Morax for saving him from another God's slavery, so in exchange, he promised to protect the landa of Liyue through a contract.
As you were currently one of the citizens of Liyue, he'd offered you his services. Aka, to call out his name if you're ever in any sort of trouble. He'd assumed you'd use this if you were under some sort of attack, but even if you didn't, he promised himself he'd help you with whatever it was anyway.
After all, you'd gotten close to him, so he couldn't afford to have you leave or die now. He cared for you, even if he himself didn't want to admit it. He found the notion useless.
Today, you found yourself using this privilege and calling out Xiao's name. The guardian Yaksha appeared almost instantly, wind flowing through the area around you as he gripped his spear tightly.
"..what's the matter?" Xiao asked upon his arrival. He quickly looked around, surveying the area, then his golden irises landed on you. "...I see," he murmured, seeing your predicament.
As promised to himself, he'd help you with whatever you needed.