idiom · to be hardworking and self-motivated in one's studies or professional training

想要在学业上有所成就，就必须要有闻鸡起舞的刻苦精神。

idiom · to start practicing or exercising at the first crow of the cock

祖逖闻鸡起舞，刻苦练武，最终成为了一代名将。