[埋头苦干 / 埋頭苦幹, mái tóu kǔ gànㄇㄞˊ ㄊㄡˊ ㄎㄨˇ ㄍㄢˋ] to bury oneself in work (成语 saw); to be engrossed in work; to make an all-out effort; up to the neck in work#31484
[同甘共苦, tóng gān gòng kǔㄊㄨㄥˊ ㄍㄢ ㄍㄨㄥˋ ㄎㄨˇ] shared delights and common hardships (成语 saw); to share life's joys and sorrows; for better or for worse#34993
[刻苦耐劳 / 刻苦耐勞, kè kǔ nài láoㄎㄜˋ ㄎㄨˇ ㄋㄞˋ ㄌㄠˊ] to bear hardships and work hard (成语 saw); assiduous and long-suffering; hard-working and capable of overcoming adversity#100640
[不经一番风霜苦,哪有寒梅吐春芳 / 不經一番風霜苦,哪有寒梅吐春芳, bù jīng yī fān fēng shuāng kǔ, nǎ yǒu hán méi tǔ chūn fāngㄅㄨˋ ㄐㄧㄥ ㄧ ㄈㄢ ㄈㄥ ㄕㄨㄤ ㄎㄨˇ, ㄋㄚˇ ㄧㄡˇ ㄏㄢˊ ㄇㄟˊ ㄊㄨˇ ㄔㄨㄣ ㄈㄤ] No bitterness today, no sweetness tomorrow; Without the winter's cold and wind, where would the sweet spring fragrance come from?