五四运动 wǔsìyùndòng May Fourth Movement Origin Definitions Defs Strokes Stroke Words Sentences Sents 五四 wǔsì May 4th May 4th; specifically refers to the May Fourth Movement of 1919 which began as a protest against the Treaty of Versailles运动 運動 yùndòng noun campaign a large-scale organized public activity; a political or social movement; a drive