继晷焚膏 (繼晷焚膏) jì guǐ fén gāo

jì guǐ fén gāo set phrase working throughout the day and burning the midnight oil
Domain: Idiom 成语 , Subdomain: , Concept:
Notes: Variant of 焚膏继晷 (Guoyu '繼晷焚膏')