A: Those shoes in the window are nice! have a look.
B: What are your shoes, Mike?
A: Size 7.
B: Size 7? That's so small.
A: In China I size 40 shoes.
B: Oh! Your feet are bigger than . My shoes are size 37.
A: Really? You look taller than me.
B: But I think you are heavier. How are you?
A: I'm 48 kilograms.
B: Yes, you're heavier. I'm 46 kilograms.