It is a 12,000-year-old transmitter! Before the dawn of human civilization, they came and went, leaving behind various clues on the Giza Plateau so as to verify their experiment on Earth. There is a secret chamber inside the Great Pyramid! Actually, the Pyramid itself is the secret chamber that embodies the "knowledge to explain the history of mankind and it cannot be seen or touched." Of course, it is intangible because it exists in the form of microwave frequency! After reading this book, you've not only decoded the Pyramid riddle but also figured out how to contact them! Not only have they shaped the history of mankind but they will also change our future! So it's time for you to consider this question: 'Why do they want us to call them? Why?' A: To congratulate us. or B: To exterminate us. They have been waiting for 12,000 years.