The origin of the technique "16-character Yin-Yang Feng Shui Secret" In the late Qing Dynasty, there was a famous gold hand washing captain named Zhang Sanlian and Zhang. It is said that he dug up the whole image of 16-character divination from an ancient tomb, and combined it with the patented product "Searching for Dragons" of a captain who touched gold, he wrote a "Secret of 16-character Yin and Yang Feng Shui". But this book stole the secrets of heaven and earth, fearing that it would harm longevity, so it destroyed half of Yin and Yang, and the remaining half was passed on to his disciple Sun, even his own descendants. (It is mentioned in "The Ghost Blows the Lights in Yunnan Worm Valley" that Hu Bayi almost got the dragon's keel gobbledygook and later lost it in the process of running for his life. )
Later, Hu Guohua (Hu Bayi's grandfather and Guo Sun's apprentice) read the book and left it to Hu Bayi.
Then Hu Bayi.