to exhaust one's thoughts and ingenuity (idiom); to think sth through thoroughly; to rack one's brains; to leave no stone unturned
trad. 殫精極慮
Also written 殫精極慮【dān jīng jí lǜ】
to exhaust one's thoughts and ingenuity (idiom); to think sth through thoroughly; to rack one's brains; to leave no stone unturned
trad. 殫精極慮
Also written 殫精極慮【dān jīng jí lǜ】