Two cities in different regions or countries that have formed a legal or social agreement to promote economic and cultural exchange; twin cities. Also known as [[姊妹市|姊妹市|zi3 mei4 shi4]] in Taiwan.

(formal) maintaining good neighborly and friendly relations; friendly and peaceful interactions between neighboring countries

Youhao district of Yichun city [[伊春市|伊春市|yi1 chun1 shi4]], Heilongjiang

good relations; friendly relationship between people or countries

Chinese People's Association for Friendship with Foreign Countries

friendly relations and cooperation

a friendship delegation or goodwill mission visiting a foreign country

environmentally friendly; of a type that is beneficial to the environment

cordial and friendly; often used to describe the atmosphere of meetings or diplomatic interactions