Qidian library
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A Collection of Science Fiction Novels for the Ultimate Brain
I think you know, yes, the world we live in is a wonderful world. There have been many incredible people who have changed an era. Undoubtedly, these people are called great people. From the perspective of people in the future, when we look back, it is indeed amazing that they were able to produce such results and achieve such results in their environment at that time! It's unimaginable! Suppose, one day, you suddenly traveled through time, to the Warring States Period, to Da Qin, or even to preh
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Conjecture About the Speed of Light and Time
Associations arising from a dream
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