四五运动 sìwǔyùndòng April Fifth Movement Origin Definitions Defs Strokes Stroke Words Sentences Sents 四 sì numeral four the number four; complex form used for financial purposes is 肆 sì五 wǔ numeral five the number five; 5运动 運動 yùndòng noun campaign a large-scale organized public activity; a political or social movement; a drive