(idiom) describing a situation that is complex and difficult to understand or unravel; originally used in the poem [[木兰诗|木蘭詩|mu4 lan2 shi1]] to describe how male and female rabbits are hard to tell apart when running.

Originally referring to the difficulty of distinguishing a rabbit's sex while it is running; now used to describe a situation that is complex, confusing, and difficult to understand or see clearly; same as [[扑朔迷离|撲朔迷離|pu1 shuo4 mi2 li2]]