The Princess and the pea
Once upon a time, there was a prince who wanted to marry a real princess. one stormy night, a youg woman claiming to be a princess showed up at the castle gate.
The queen, skeptical to the young woman's claim, decided to test her by placing a pea under twenty mattresses and twenty feather beds. In the morning, the princess complained of a terrible night's sleep, saying, "I scarcely closed my eyes at night. Heaven only knows what was in the bed, bt I was lying on something hard.
The prince knew she was a real princess, for only a true princess would be able to feel a tiny pea through so many layers of bedding. They were married and lived happily ever after.
What is the main idea of the second paragraph of the story "The princess and the pea."?