“班门弄斧”这个成语的意思是说在鲁班的门前舞弄斧头,比喻在行家面前卖弄本领。关于这个成语还有这样一个典故:明朝梅之涣在《题李白墓》一诗里,用“来来往往一首诗,鲁班门前弄大斧”来讥讽那些在行家面前卖弄本领的人,意思和“自不量力”大致相同。 The meaning of the idiom “Make up with the door” means to dance to an axe in front of Luban’s door and use it as an analogy to show off his skills. There is another idiom about this idiom: In the poem “The Tomb of Li Bai”, the writer of the Ming dynasty Mei Zi used “a poem from time to time to get a big axe in front of Luban” to ridicule those who showed off their talents before the experts. The meaning is almost the same as “self-sufficiency.”