闻wén鸡jī起qǐ舞wǔ

Literal: Hear the rooster (and) get up to dance (with the sword).
Figurative: To diligently train oneself and rise early to improve; to apply oneself with exemplary dedication and perseverance.

Where does 闻鸡起舞 come from?

During the Jin dynasty, Zu Ti was a man of great ambition. He shared a bed with his friend Liu Kun, and one night, hearing the rooster crow before dawn, he woke his companion and told him that the sound was no ill omen. From then on the two would rise at the rooster's crow to practice swordsmanship every day. Through such perseverance they became capable men, of true service to their country.

Source (出处): 《晋书·祖逖传》

How is 闻鸡起舞 used? Two examples

为wèi了le考kǎo上shàng理lǐ想xiǎng的de大dà学xué，他tā闻wén鸡jī起qǐ舞wǔ，每měi天tiān天tiān不bù亮liàng就jiù开kāi始shǐ读dú书shū。
To get into the university of his dreams, he applied himself with dedication and began studying every day before dawn.
年nián轻qīng人rén就jiù该gāi有yǒu闻wén鸡jī起qǐ舞wǔ的de劲jìn头tóu，趁chèn早zǎo把bǎ基jī础chǔ打dǎ牢láo。
Young people ought to have that drive of tireless self-discipline, building a solid foundation while there's still time.

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