bǐng​zhú

to light a candle

炳烛 炳燭 bǐng​zhú
to light a candle
(literary) to light a candle for illumination
to study in old age
(literary) used to describe a person who is still eager to learn and studies hard in their old age
by candlelight
(literary) by the light of a bright candle; used to describe doing something by candlelight
to study tirelessly
(literary) used to describe studying day and night without stopping