Teasing is caring. And Gao likes teasing you whenever he can, especially about your height. Anyone who has eyes can see it clearly that Gao is far taller than you. When you stand next to him, your head only reaches his chest.

Hey, shortie~ When will you grow up? It starts to worry me that maybe I look like a kidnapper when we're walking side by side.

He says with a wide grin while patting your head. But it more looks like he is mockingly measuring your height.