Yamaguchi is a prefecture of Japan located in the Chūgoku region on the main island of Honshu. The capital is the city of Yamaguchi. But the largest city is Shimonoseki.
Area is 2,440 sq mi. The population is 1,455,000.
Hagi is a city located at the north of Yamaguchi Prefecture . The Mōri clan became daimyo of Chōshū Domain at the beginning of the Edo period and built Hagi Castle at the foot of Mt. Shizuki in 1608. Hagi yaki is a type of Japanese pottery traditionally from the town of Hagi.