Read the passage and answer the questions.

The content of the essay: In an ancient castle, there was a mysterious room that was said to contain a magical treasure. However, the whereabouts of the treasure had always been a mystery. No one knew where it really was. One day, a young adventurer came to the castle in search of this treasure. He went deep into the room and kept looking for clues. Finally, he found an ancient scroll with some information about the treasure. The scroll said that the treasure was hidden in the castle's basement, but to find it, an ancient puzzle had to be solved. The answer to the puzzle was hidden in another room in the castle, but this room was protected by a mysterious magical barrier. The young adventurer began to search for the magic barrier and finally found it and successfully bypassed it. He found the basement, found the treasure, and successfully obtained it. The ending of the story is left to the imagination of the readers, but the young adventurer has obviously become the hero of the castle because he has found the treasure and successfully solved the mystery.