On his feet.

The bag she pointed to was the same one which she often carried, the black school bag which she preferred to all the branded name bags his mother bought her.

He couldn't tell if she was cracking a joke or being serious about it. There was really no way a human could fit into that small bag, the dimensions just didn't work. This was real life, not one of those fantasy movies set in a cultivation world where they had those space bags in which everything could magically fit. 

But then, just as he thought about it, he recalled all the times that she had pulled out all sorts of things from it. Like the snacks, she always had every kind of snack in there and nobody else that he knew carried around a variety of snacks as if they were expecting a food emergency.