guàn shāmào
掼纱帽（掼纱帽）
[throw away one's official's hat in a huff;resign in resentment;quit office]
旧时官员都戴乌纱帽,因此用纱帽比喻官职。掼纱帽,现在常用来比喻因气愤而辞职或丢下工作甩手不干