An old woman cried everyday under the tree. People did not know why.
One day, a monk passed by and asked her why she cried so sadly. The old woman said, "I have two daughters, the elder selling umbrella and the younger selling dried food. On sunny days, I cry because my elder daughter cannot make a living as nobody buys umbrellas. On rainy days, I cry because my younger daughter cannot make or sell dried food."
The monk then told the old woman, "I can make you happy! Oh dear, you should think of your elder daughter on rainy days. You will be happy because people buy umbrellas from her. On sunny days, you should think of your younger daughter because she can earn a lot of money by selling dried food."
The old woman was suddenly enlightened. Since then, she laughed everyday under the tree.