中流砥柱 zhōngliúdǐzhù mainstay Origin Definitions Defs Strokes Stroke Words Sentences Sents 中流 zhōngliú midstream The middle or center of a current or stream砥柱 dǐzhù Mount Dizhu A hill formerly located in the middle of the Yellow River at Sanmenxia in Henan province, used metaphorically for firmness and strength