Photo: Public domain, via Wikimedia Commons

What is the world’s oldest surviving book printed with movable metal type?

Jikji, a collection of Confucian teachings, was printed by a group of Korean monks in the ancient city of Cheongju in 1377. Jikji is the world’s oldest surviving book printed with movable metal type, predating the earliest Gutenberg Bible by 78 years. The only known copy of Jikji is in France, after being purchased in 1877 and eventually donated to France’s national library. It has not been on display for over 50 years.