探驪得珠

1. • to pluck a pearl from the black dragon (idiom, from Zhuangzi) fig. to pick out the salient points (from a tangled situation)
2. • to see through to the nub

Character by character

• 探(tàn)explore
• 驪(lí)black horse
• 得(dé)get
• 珠(zhū)bead