臣一主二 chén yī zhǔ èr

chén yī zhǔ èr set phrase one minister can choose which ruler to serve
Domain: Idiom 成语 , Subdomain: , Concept:
Notes: (CC-CEDICT '臣一主二'; Guoyu '臣一主二'; Mathews 1931 '臣一主二', p. 40)