Detailed explanation of four-column prediction: A brief introduction to the author.

Wang Changhong, born in 1956, came from a family of diviners. Grandpa Wang won the reputation of "The First Wonder of Divination" in Yingkou City, Liaoning Province. He inherited the ancestors' thought of Yi-ology and has been engaged in the study of Yi-ology for a long time. He put forward many new Yi-ology theories and made the essence of divination accumulated by three generations in the past 100 years public. 1996 compiled the textbook "Four-Column Prediction Concise Course" for China Anyang Zhouyi College. In 2006, the textbook "Folk Feng Shui" was compiled for the college again. His thought of Yi-ology is refreshing, and his incisive insights have gained a high reputation in the field of Yi-ology research, which also makes the majority of Yi-ology lovers admire him.