Chinese writing developed square forms gradually, shaped by language, tools and tradition, analysis suggests

A new study published in the International Journal of Arts and Technology challenges the notion that Chinese characters' distinctive square shapes resulted from a single cause. The research, conducted by Man Dai et al., indicates that the square form emerged from a complex interplay of linguistic, technological, and cultural factors.

The researchers examined the evolution of Chinese writing by differentiating between the linguistic unit represented by a character and the space its written form occupies. They considered four potential units: phonemes, syllables, morphemes, and words. Previous explanations for the square configuration attributed it to semantic structures, simplicity in component shapes, or traditional preferences for symmetry and square forms.

However, this new analysis suggests that none of these factors alone can account for the evolution of square-shaped characters. The researchers propose that the square-shaped writing cells emerged through gradual regularization. This process involved the grouping of graphic components, changes in character structure, and practical demands of writing with brushes on materials like bamboo slips.

As scribes and later printing technologies adopted the convention, it became further entrenched. Cultural preferences may have also played a role in supporting the continuation of the square outline. The researchers emphasize that the square shape of Chinese characters evolved through a combination of linguistic, technological, and cultural influences rather than being dictated by a single cause.