How did the large number of Chinese characters make movable type difficult to use?

The use of movable type was difficult in China primarily due to the nature of the Chinese writing system, which is logographic rather than alphabetic. Because the language requires a unique character for each morpheme, the total number of characters is vast—reaching as many as 40,000 graphs.1

This high volume of characters created significant practical obstacles for early printers:

• Setting and Filing: The sheer number of individual characters made the process of selecting, arranging, and subsequently filing the movable type extremely labor-intensive and inefficient compared to alphabetic systems.2
• Preference for Woodblocks: Because of these complexities, movable type technology often failed to replace traditional woodblock printing in Asia. Woodblock printing allowed artisans to carve entire pages of calligraphic text at once, which was often more economical and better suited to the language's requirements than managing thousands of individual pieces of type.32

While innovators like Pi Sheng and Wang Chen developed methods to organize and use movable type—such as revolving compartmented cases—these systems remained difficult to implement on a large scale for the Chinese language.3