刻苦耐勞

Simplified: 刻苦耐劳

kèkǔnàiláo ㄎㄜˋ ㄎㄨˇ ㄋㄞˋ ㄌㄠˊ

    • to bear hardships and work hard (idiom) assiduous and long-suffering
    • hard-working and capable of overcoming adversity

Character by character

Sources