Tanaka Hisashige, born in Kurume, Chikugo province ( a former province of Japan in the area that is today the southern part of Fukuoka Prefecture on Kyūshū. ), invented an inkstone case with a secret lock when he was eight years old.
Tanaka Hisashige, born in Kurume, Chikugo province ( a former province of Japan in the area that is today the southern part of Fukuoka Prefecture on Kyūshū. ), invented an inkstone case with a secret lock when he was eight years old.