Imagine sitting down for a pleasant evening with friends, raising a cup of wine to your lips, and seeing something horrifying wriggling in your drink. Your stomach lurches. Your hand freezes mid-motion. You put the cup down, maybe spill some wine, and feel your heart racing as you stare at the surface of the liquid where you swear you saw movement. Now imagine being told later that what you saw wasn’t real — that the “snake” was actually just the reflection of a bow hanging on the wall behind you, curved and distorted through the wine in exactly the right way to look serpentine. That’s the situation at the heart of the Chinese idiom 杯弓蛇影 (bēi gōng shé yǐng), which translates to “seeing a bow in a cup as a snake.”

It’s a story that has resonated for nearly two thousand years because it speaks to something we all recognize in our own lives: the way fear can take hold of us even when there’s nothing to be afraid of, and how suspicion, once planted in the mind, is remarkably hard to shake. The snake you think you see doesn’t go away just because someone tells you it was never there. Your body already responded as if it were real. Your heart already raced. The fear is already real, even when the snake wasn’t.