请将以下英文转换为汉语，使用户能了解其梗概。"The novel follows the journey of a young girl named Lily who embarks on a quest to find her long-lost brother. Along the way, she encounters various challenges and learns valuable lessons about bravery, friendship, and family. The story is set in a mystical land filled with magical creatures and ancient legends."
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《这本小说讲述了一个名叫莉莉的年轻女孩踏上寻找失散已久的哥哥的旅程。在旅途中，她遇到了各种挑战，并学到了关于勇敢、友谊和家庭的宝贵教训。故事发生在一个充满魔法生物和古老传说的神秘土地上。》
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