相辅相成 (相輔相成) xiāng fǔ xiāng chéng

xiāng fǔ xiāng chéng set phrase to help each other; to complement one another
Domain: Idiom 成语
Notes: (CC-CEDICT '相輔相成'; CCI '相輔相成', p. 51; Guoyu '相輔相成')