关灯吃面
guān dēng chī miàn
"Eating noodles with the lights off" — the standard way to say you took a bad loss in the market. Broader than a stock term now: any quiet, undramatic private misery.
Origin
On 15 December 2011, as Chongqing Brewery (重庆啤酒) collapsed from roughly 80 yuan to 20 after its hepatitis-B vaccine trial showed no significant effect, a user posted on the East Money stock forum (东方财富网股吧) under the title 一边吃，一边哭 ("eating and crying"): 今天回到家，煮了点面吃，一边吃面一边哭，泪水滴落在碗里，没有开灯。 ("Got home today, cooked some noodles, cried while I ate, tears fell in the bowl, never turned the light on.") The image stuck and became permanent vocabulary.
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What does 关灯吃面 mean? The complete guide — origin, usage, related slang, and cultural context.
Examples
今天又关灯吃面了。("Eating noodles in the dark again today." — I lost money again.)
吃面 ("eating noodles") on its own means losing; its opposite is 吃肉 ("eating meat"), meaning your position is up.
Related terms
天台见
tiān tái jiàn
"See you on the roof" — gallows humor for having lost catastrophic money, usually on football bets or the stock market. The unspoken second half is that the rooftop is where you'd go to jump, so the phrase means roughly "I'm ruined" said with a laugh.
草台班子
cǎo tái bān zi
Literally a 'straw-stage troupe' — any operation that looks official but is actually disorganized, unprofessional, and improvised; the viral extended form 'the whole world is one giant clown show' applies that to everything.
内卷
nèi juǎn
Involution — excessive, often pointless competition where everyone works harder but nobody gains more.
打工人
dǎ gōng rén
Working people / wage slaves — a self-deprecating term workers use to describe themselves.