The Mapping
The mapping between groups of stokes and their corresponding digits 0-9 can be described by the following:
- 一橫二豎三點捺
- 叉四插五方塊六
- 七角八八九是小
- 撇與左勾都是零
This means: 1 represents a horizontal stroke, 2 a vertical or diagonal stroke, 3 a dot or left-to-right diagonal stroke, 4 two strokes in a cross shape, 5 three or more strokes in which one stroke intersects all others, 6 a box-shape, 7 where a stroke turns a corner, 8 the shape of the Chinese character 八 and its inverted form, 9 the shape of the Chinese character 小 and its inverted form, and 0 a right-to-left diagonal or left hook stroke.
Read more about this topic: CKC Chinese Input System