五一 wǔ yī 🔊 5-1 (May 1st) + Review this word Meanings wǔ yī 5-1 (May 1st) Its characters 五wǔfiveHSK 1一yīoneHSK 1 Words with 五一 一五一十 yī wǔ yī shí lit. count by fives and tens (idiom)