卅thirty, thirtieth; thirtyStrokes4PinyinsàParts一one川stream, riverBuilt from 卅带belt, strapWords with 卅五卅wǔ sà · wusaabbr. for 五卅運動|五卅运动[wu3 sa4 yun4 dong4], The May Thirtieth Movement (1925)五卅运动wǔ sà yùn dòng · wusayundonganti-imperialist movement of 30th May 1925, involving general strike esp. in Shanghai, Guangzhou, Hong Kong etcStudy it in Yanamino