On their own
Small snail asked mom: Why do we have to carry this hard and heavy shell? Mom: Because our body has no support, it can only climb, and it is not crawling. So the protection of this shell! Small snail: caterpillar is not bone, can't climb, why don't she have to carry this hard and heavy shell? Mom: Because the caterpillar can turn into a butterfly, the sky will protect her. Small snails: But the younger brother didn't climb the bones, nor will it become a butterfly he doesn't have this hard and heavy shell? Mom: Because the younger brother will blister the soil, the earth will protect him.
Small snail: Cry and say "The caterpillar sister has sky protection, and the younger brother also has the mainland protection, what is we rely on protection?"
Mom: So we have a very hard shell, we don't rely on day, don't rely, we rely on yourself!
