瓦釜雷鳴wa fu lei ming
earthen pot making a lot of noise—man without virture or talent usurping a high position and lording it over others
瓦釜雷鳴wǎ fǔ léi mínɡ
瓦釜：陶制的炊具。沙鍋發(fā)出雷鳴般的響聲。比喻庸人身居高位。an unworthy person making a sensation and enjoying popularity, mediocre persons hold high posts