Once I got lost in the forest with my father. The sky got dark and we were worried,for it was our first time walking into that forest.
We didn't have any tools to show us the direction. My father and I had no choice but to put up a tent near a river to spend the night. When night fell, the stars came out, lighting the whole sky. That was when an idea came to my mind. As a member of the Astronomy (天文学) Club in school, I was able to tell different groups of stars in the sky. If we could find the North Star, we could find out which direction was north.
After I picked out the North Star, we found the north direction. We walked north and then saw a house. We went to the owner of the house to ask for directions. With his help, we made our way out of the forest. From this experience, I learned how important it is to use the knowledge that we have got to solve the problems we meet.