And here is one way of how it's done in China:
Want to see how 1 through 10 are conveyed with hand signals in China? It is demonstrated in short video (created by 'My New Chinese Love') below:
One of the great things about learning of different cultures is realizing where your assumptions are - I had never thought of number hand signs in a cultural context, but if I had taken a moment to think about it, I would have assumed everyone did it "our" way. But of course, there is always more than one way to do anything.