徹 - penetrate, clear, pierce

staying up all night

accomplishment; realization; attainment; fulfillment; achievement

thorough; exhaustive; complete

thoroughness; completeness; consistency

cool-headed; level-headed; hard-headed

to penetrate; to sink in

to (be able to) read between the lines

to (be able to) read between the lines

carrying out one's original intention

to have a deep grudge; to bear deep resentment towards someone

all-night karaoke

to stay up all night; to sit up all night; to do something all night