Once, a man travelled on a train. He felt hungry and got off at a station to look for food. He bought the food in a short time but the train had gone away. It was getting dark and he decided to find a place to spend the night. So he went to the nearby hotels to look for a room but found none.
At last he reached a small house. He asked permission for staying in it for a night. The host agreed happily. The host served him food and gave him a room to sleep in. But the host did not ask for anything in return.
When it was seven at night, the man heard a knock at the door. He saw someone well-dressed enter the house and ask the host to pay his debts (债务). The man came to know that the host was in need of money. The next morning, he put a box in the room and left.
When the host found the box, he saw a note saying, "You helped me but did not expect anything from me. Yesterday I heard the talk and knew your problem. This is what you need."
