sān​gēng​dēng​huǒ​wǔ​gēng​jī

diligent in study

三更灯火五更鸡 三更燈火五更雞 sān​gēng​dēng​huǒ​wǔ​gēng​jī
diligent in study
Burning the midnight oil and waking with the rooster; describes someone who studies or works with extreme diligence and hardship.

Cross-References

Same as