There is a crab, who has been living in its shell to entertain himself and never dares to show his head. Because it is afraid, afraid of contact with others, afraid of meeting bad people, afraid of being hurt. But it really wants to see what the outside world is like. One day, it was really impatient. Bit by bit, it just poked its head out beside Nuo Nuo. "wow! What a wonderful world outside! It's so beautiful, this is the' world', ah! It turns out that the' world' is so colorful and so beautiful. " The crab said with emotion. It tried to stretch its neck longer and see farther. Just then, a small stone fell from the sky and hit its head. "My mama ah! Scared me to death, whoops ............................................................................. "I said don't go out! I said it's terrible outside! I said only your own shell is the safest! "It said to himself. From that day on, the crab never poked its head out again. It sketched this beautiful dream in its own shell and weaved it with the narrow "world" it saw in an instant. It's like this every day.

"Dong! ..... Dong! ..... Dong! ....... ""What's that noise? What's going on here? What's wrong? " The crab felt its shell being pounded by something. It seems that it will crack soon. "What should I do? What to do! Somebody help me. Oh! My shell, my hard shell. You have to hold on! How can I live without you? Where can I shelter from the wind and rain without you? Without you, my world would not exist. Without you ....................... "Crabs are more and more afraid and more anxious. However, the knocking seems to be against it, and it is getting worse and worse. The "thud" shell finally cracked and the fragments were scattered all over the floor. The thin little body is exposed, and the sun shines on it, making it warm and painful. The sun is so strong that it can't open its eyes. This also makes it more afraid. "How can I live without a shell!" "The crab muttered helplessly. At the same time, there are many people around it, looking at it with jokes, sympathy and concern. But in the eyes of this crab, everyone is laughing at it. The more people stare at it, the more it pulls up. More and more people are watching and the time is getting longer and longer. The only constant is the crab lying there motionless. Perhaps there is nothing new, and the crowd slowly dispersed. Only crabs stay there alone. One day, two days, three days ... no one looks at that crab anymore, and everyone is used to its existence. Slowly, crabs also adapted to the external environment. Adapted to the comfortable feeling of being fed by the sun. It began to stretch and even started to stand up and walk. After a while, it can look people in the eye and talk to them. Can be integrated into the real world. Become optimistic. No longer afraid of this and that. No longer use that twisted heart to guess other people's psychology. This time, the crab really took off its shell and completely removed it. On the contrary, it gets happiness, freedom and satisfaction. This is never felt in the shell.