Gutenberg's 42-line Bible required about 299 glyphs. The natural presumption is his letters were cast from a single matrix (e.g. a single 'A' mold casts thousands of 'A' types), however careful analysis of his books reveals variations between letters which suggest multiple subtly different matrices were used. The reason for the apparent variation between the matrices is disputed, but one explanation is the variation between matrices may indicate the matrices were produced by composing several individual stroke punches, rather than one punch per gylph. I think this technique of using individual stroke punches to compose matrices then used for die casting could work for Eastern languages too. I don't know how many individual stroke punches you would need for Korean or Chinese, but it's surely fewer than the number of glyphs those languages have.