Once upon a time, there was a little mouse named Mimi. Mimi had a great dream of becoming an astronaut and going to space. The other mice laughed at Mimi, thinking that its dream was unrealistic. However, Mimi didn't give up and every day it would study hard about space knowledge and even made some simple space equipment by itself. One day, Mimi heard about a space exploration program and without hesitation, it signed up for it. After going through multiple selections, Mimi finally became an astronaut. During the space mission, Mimi encountered many difficulties and challenges but it always remained brave and determined. It solved one problem after another with its wisdom and courage until successfully completing the mission. When Mimi returned to Earth, it became a hero among the mice community. Its story also inspired other mice to believe that as long as they have dreams and work hard towards them, they can definitely achieve them. This story tells us that no matter how distant our dreams may seem, as long as we have the courage to pursue them, we can certainly make them come true.