闭门造车

bìménzàochē

闭门造车 — bìménzàochē

1. literally, to shut oneself away and build a cart; figuratively, to work on a project in isolation, ignoring outside realities

   公司闭门造车，结果产品不受市场欢迎。 gōngsī bìménzàochē jiéguǒ chǎnpǐn bùshòu shìchǎng huānyíng — The company worked behind closed doors and, as a result, the product was not welcomed by the market.