Although human civilization is now highly developed and many mysteries have been revealed to the world, our known world is still just a drop in the ocean compared with the unknown world. Facing the mysterious space unfolding in front of us, human beings have been pursuing and exploring in a world full of surprises and strangeness since history. They have used the keys of their own wisdom to open mysterious doors one after another, and human society has continued to advance because of this.
This book is carefully compiled based on this. This book selects the most valuable and most concerned unsolved mysteries on the earth, and combines scientific literature, archaeological and scientific research results and data, organically combines popular science with interest, and details the doubts hidden behind the mysteries, so that readers can broaden their horizons and understand our world more accurately.
