What is a bad cake?

Also known as "omelet". Beijing traditional flavor cakes. It is baked with fresh eggs and proper amount of sugar, flour and spices. Small round cake, reddish brown at the top, light yellow at the bottom, and soft fragrance at the entrance. "Clear barnyard grass notes": "Beijingers are afraid of the word' egg', and cakes are said to be in the trough, saying that when they are made, they will enter the trough."