成语

杞人憂天In the Spring and Autumn Period， in the State of Qi there was a man who always let his imagination run away with him.One day he even worried that the sky would fall on his head. He was so worried that he could neither eat nor

杞人憂天In the Spring and Autumn Period， in the State of Qi there was a man who always let his imagination run away with him.One day he even worried that the sky would fall on his head. He was so worried that he could neither eat nor