sing a piece of To show you want the check, make a movement with your hands as if you are singing a piece of paper,

sing a piece of To show you want the check, make a movement with your hands as if you are singing a piece of paper,

To call a waiter,raise one hand to head level or above.To show you want the check,make a movement with your hands as if you are singing a piece of paper..
Signing a piece of paper, not singing
If you want to ask the waiter to come, put your hand up a little bit. If you want to pay, make a sign on the paper. Then people will know that you want to pay
Because in foreign countries, we usually use credit card to sign, understand?