關

mountain pass / to close; to shut; to turn off / to confine; to lock (sb) up; to shut (sb in a room, a bird in a cage etc) / to concern; to involve

a matter of no concern to oneself (idiom)

Xiaguan district of Nanjing City 南京市 in Jiangsu 江蘇|江苏

triangle relationship / a love triangle

Xiaguan district of Nanjing City 南京市 in Jiangsu 江蘇|江苏

Shimonoseki, city in Yamaguchi Prefecture, Japan

improper relation / adulterous relation

unimportant / of no consequence

World Customs Organization

Sino-Russian relations

center-embedded relative clauses

Sino-Japanese relations

Zhongguancun neighborhood of Beijing, containing Peking University, famous for electronics shops and bookstores

the authorities / higher competent body

to be promiscuous / to sleep around

to feel unconcerned and let matters rest (idiom)

triangle relationship; (esp.) a love triangle

improper relationship; illicit relationship

the agency in charge of (e.g. a program); the relevant government body

one man can hold the pass against ten thousand enemies (idiom)

to make a pun / to have a double meaning / double entendre