The middle class, volume one. "The Big Lion and the Little Mouse" is an open class suitable for the middle class of kindergarten, which lasts for 24 minutes and belongs to the first book story of the middle class. The Story of the Big Lion and the Little Mouse tells the story of a big lion and a little mouse. When the mouse and his friend were playing hide-and-seek, they accidentally climbed onto the lion's nose and woke up the sleeping lion. The little mouse begged the lion to let himself go and promised to help the lion.