掩耳盗铃 (yan er dao ling) literally means “covering one’s ears to steal a bell” in English or “Taperse los oídos al robar una campanilla” in Spanish. It actually means “deceiving oneself” or “engañarse a sí mismo“. It has similar meaning to “bury one’s head in the sand” or “esconder la cabeza debajo del ala“
The origin of the metaphor can be traced back to the ancient China’s Spring and Autumn Period (476BC to 770BC). History had it that a thief at the time tried to steal a big and heavy copper bell from a house. He could not move it so he had to break it into pieces. The thief found a big hammer and tried to do so. He realized that it would produce a very loud noise and would draw others’ attention. To avoid that he stuck some fabrics into his ears. He thought others, like him, could not hear it when he hit the bell with the hammer. Needless to say that was not the case and he got caught.