Once upon a time, a rich man wanted to make a trip (旅行) to another town. He took ten servants (仆人) with him. They had to carry things to sell and some food to eat on their trip. 

Before they started, a little boy ran up and asked to go with them. 

The rich man said to the little boy, "Well, you may go with us. Because you are the smallest, the thinnest and the weakest of all my servants, you can't carry a heavy load (担子). You must choose the lightest one to carry. " The boy thanked his master and chose the biggest load to carry. That was bread.

"You are foolish. " said his master, "That is the biggest and the heaviest one. " The boy said nothing and lifted the load gladly.

On the trip they walked for days and at last they got to the town. All the servants were tired except the little servant. Do you know why? Most of the bread was eaten during the trip and a little was left when they arrived at the town.