There was a very rich man named John. He gave a great puzzle (谜语) to the people in the town.
In his house, he had a very large room. "If anyone of you can fill my room in one day, I will give you 100,000 dollars." Everyone in the town wanted to try.
The first man tried to fill the room with stones. At the end of the day, he was very tired, but the room was still empty.
The second man tried to fill the room with wood. He worked all day, but the room was not full. "That room is too big," he said. "No one can do this."
The third man said, "I can do it. It's easy." Everyone laughed. They thought he could not do it. Then, the man went to the park and played all day. His friend said, "Why are you playing? You should be working." The man said, "I can do it. Don't worry." At 8 o'clock at night, the man came to the room with a small bag. The rich man said, "Haha……that bag is too small.Itdoesn't fill the room." The man reached into the bag and took out a candle. He lit (点亮) the candle and said, "You see, the whole room is filled with light!"
