The main character, a young woman named Lena, embarks on a journey through different eras of history, from ancient civilizations to futuristic societies, in search of answers to the questions of her own existence and the future of humanity. Along the way, she encounters various challenges and obstacles, including wars, natural disasters, and political upheavals, but also meets new friends and allies who help her navigate the complexities of the past and the possibilities of the future. Book Description: Title: The Great Problem Cycle Author: Тимофей Иванов Genre: Science Fiction, Time Travel, Adventure СИ 2023 Summary: In this thrilling science fiction novel, a young woman named Lena discovers a way to travel through time and space using a revolutionary device called the "Time Machine. " With the help of her newfound allies, she embarks on a journey through different eras of history, from ancient civilizations to futuristic societies, in search of answers to her own existence and the future of humanity. Along the way, she faces numerous challenges and obstacles, including wars, natural disasters, and political upheavals, but also uncovers hidden secrets about the evolution of technology and the survival of humanity.

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