good good study, day day up

English

(China) if one studies hard, they will gradually improve day by day
- 2018 July 16, Jing Guo, High Resolution Imaging, Spectroscopy and Nuclear Quantum Effects of Interfacial Water, Springer, →ISBN, page xii:
  Last, but the most important, I would like to thank my parents for their endless love and support. When I was a young girl, they told me "Good good study, day day up." I always keep these simple words in mind and try to make it.
- 2024 May 22, Ruanni Tupas, Investigating Unequal Englishes: Understanding, Researching and Analysing Inequalities of the Englishes of the World, Taylor & Francis, →ISBN:
  William from Canada said, "My Chinese classmates often tell me to 'Good good study, day day up' (study hard and make progress every day). It's catchy; it has become my signature line!"