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When you eat at Chinese restaurants, tea is typically served in a pot and poured into small cups. After a few rounds, the tea is bound to run out. So what do you do?

There’s no need to catch a waiter’s eye and flag him down. Here’s the trick. Simply tilt the pot cover like this to signal that you need your teapot refilled. A passing waiter will notice and top up your teapot.

And when someone fills up your cup, simply tap your right index finger on the table next to your cup as the unspoken way of saying ‘thank you’.