Once upon the time, there was a farmer whom worked very hard in his field every day. One day, while he is working in the field, a rabbit ran out of the grass but bumped into a tree stump, dead. The farmer was very happily to take the rabbit home and cook a delicious meals. The farmer thought, “I needn’t work hard from now on. What I need to do is just to wait the rabbit bumping into the tree stump and pick them home.” Since then, he no longer worked, just sat next to the tree stump and waiting for the rabbit. But from then on, he never saw another rabbit was bumped into the tree stump.