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Interesting indeed. Reminds me of this [Chinese suanpan](http://en.wikipedia.org/wiki/Suanpan http://en.wikipedia.org/wiki/Suanpan).
by tuananh 14y ago
Interesting indeed. Reminds me of this [Chinese suanpan](http://en.wikipedia.org/wiki/Suanpan http://en.wikipedia.org/wiki/Suanpan).