He is reading a book about historical northern Korea.

He is a master of kung fu.

He went to see a movie with his South Korean friend.

He went to see a movie with his South Korean friend.

We ate Jingisukan in Hokkaido.

Genghis Khan was the founder of the Mongol Empire, and under his rule, the empire built its largest territory.

My mother has been suffering from temporomandibular joint dysfunction for many years.

This coffee contains sweetener.

Chancroid is a type of sexually transmitted disease, and if left untreated, it can potentially become severe.

Caseous necrosis was found in his lungs.