Bi Sheng

Bi Sheng was a Song-dynasty Chinese artisan who invented the world's first movable type printing system around 1040 AD. His invention predated European movable type systems, like Johannes Gutenberg's, by hundreds of years. This technological leap was a monumental milestone in the history of human communication and publishing.

Bi Sheng created his individual printing characters using fired clay, a method documented by the Chinese scholar Shen Kuo. He carved each character into a small piece of wet clay, baked it in a fire to harden it, and then arranged them on an iron plate. While wood and bronze were tried later, his original innovation relied entirely on this durable ceramic material.

Bi Sheng arranged his hardened clay characters on a heavy iron plate coated with a mixture of pine resin, wax, and paper ash. The plate was gently heated to melt the resin, locking the characters perfectly into place for inking and pressing. After the printing was complete, the iron plate could be reheated to melt the adhesive, allowing the clay characters to be removed and reused.

Bi Sheng's invention of movable clay type around 1040 AD fundamentally changed how texts could be reproduced, making the process far more efficient than carving entire wooden blocks for single pages. This technology is considered one of the Four Great Inventions of ancient China. It laid the early technological groundwork for the mass dissemination of literature and knowledge.