In ancient times, Fuxi studied astronomy and geography, understood the changes of yin and yang in the heaven and earth, and wrote a wordless heavenly book. Later, when Yu the Great was controlling floods, he obtained the fragments of this book, which he used to determine the Jiuzhou and divide the mountain ranges, thus becoming the source of "Feng Shui". Dayu was afraid that the book would fall into the wrong hands, so he engraved the sixteen-word secret method at the core of the book on sixteen pieces of giant turtle's belly armor, and hid it in the sixteen most dangerous "dragon caves" in the Kyushu Dragon Vein. These sixteen pieces of abdominal armor are the "Dragon Bone Heavenly Book".
The truth behind the sixteen-character Yin Yang Feng Shui secret technique:
Everyone in the world knows the half-part fragments of "Heaven, Earth, Humans, Ghosts, Gods, Buddhas, Demons, Animals, Deterrence, Zhen, Escape, Things, Transformation, Yin, Yang, and Void", but you revealed that these sixteen characters are actually two parts.
The first half (the version circulated in the world): Corresponds to the methods of "aligning the earth, controlling the environment, suppressing things, and exorcising evil spirits". It is a Feng Shui technique for "people in the world". It teaches you how to find the dragon's acupoints to avoid evil and bring good luck.
The second half (contained in the Dragon Bone Book): Behind every word, there is a "forbidden technique" that can truly change fate and shake mountains and rivers. These sixteen forbidden techniques, collectively known as the "Shanhe Sheji Jue", can draw on the power of mountains, rivers, earth, and stars. In small cases, they can bring people back to life, and in large cases, they can overturn the destiny of a country.