understand, comprehend / appreciate

history / the study of history

relationship, relation / involvement, participation / personal connection, family relationship / romantic relationship

be related / be romantically involved

Short for 中国地方 (Chūgoku chihō): the Chūgoku region of Japan

the central part of a country, historically, commonly known as the capital city or the main region, where an emperor or other ruler resides / something within a country

(historical or contemporary) any of several kingdoms, empires, or states of the Chinese people

a surname

【Conjunction】after; on the basis of; upon

upper, over