1. If you want to learn the I Ching, you must first know what the I Ching is. To put it simply, the Book of Changes describes the overall things in nature and society, and the laws of development, operation and transformation. The core idea is: Yuan (the initial stage of things, similar to spring, called wood) Heng (the growth stage of things, similar to summer, called fire) Li (the end stage of things, similar to autumn, called gold) Zhen (things The latent stage is similar to winter and is called water) 2. To master the knowledge of the Book of Changes, you must know the classification of the Book of Changes. The I Ching is generally divided into two categories, one is the original I Ching; the other is various prediction techniques derived from the I Ching. The first point: The Book of Changes originally mainly described the process of things: their occurrence, development, end, and demise. It is reflected in the process of development, change and transformation of things. It takes the influence of the movement of the sun on the earth and the role of the earth under the influence of the sun as the general guiding ideology. It uses the tools of heavenly stems and earthly branches to deduce changes in human affairs and nature. . The emphasis on gradual change and the idea that things must reverse when they reach their extremes is consistent with the idea of ??the unity of nature and man in the Huangdi Neijing. The second point: Various prediction techniques derived from the Book of Changes, commonly used ones include: four-pillar prediction (eight-character prediction), six-yao prediction (Najia Zhen method), plum blossom Yishu prediction (Xinyi), Qimen Dunjia prediction, Ziwei prediction Dou Shu prediction, Liu Ren prediction, nomenclature, and others such as face reading, palmistry, etc. Different from the above prediction techniques, there is also Feng Shui (Kanyu) technique. The following is a brief description of each of the above prediction techniques: 1. Bazi prediction technique Bazi prediction is to use the combination of heavenly stems and earthly branches in the year, month, day and time of a person's birth, and then control this group of stems to the "Ten Gods" and the Ten Gods It is used to represent the five aspects of people's social relationships and the natural environment, and then based on a series of life and death among the ten gods, the relationship between them can be used to deduce a person's past and future destiny trends. Because the Bazi prediction system is complicated and its functions are profound, and modern Yi scholars misinterpret ancient books without seeking a thorough understanding, there are very few strict Bazi prediction systems. Therefore, Bazi predictions that can predict accurately are rare. The advantage of horoscope prediction is that it can predict the ups and downs of a person's overall fortune in life; the disadvantage is that it cannot reflect the details of life, and because there are the same horoscopes, it cannot determine a person's social level. 2. Six-Yao Prediction Technique The prototype of the Six-Yao Prediction Technique is the Bagua. The Bagua describes the correspondence and changes in nature, heaven, earth, and human affairs. Based on the combination of the Bagua, the sixty-four hexagrams are paired with the twelve earthly branches and the twelve earthly branches. After transforming into six relatives (six relatives are symbols representing our social environment and natural environment), personnel changes are deduced based on the interaction between the six relatives. The six-yao prediction technique seems simple, but is actually very easy to understand. It has been repeatedly improved by masters of the past dynasties, and the system is very strict. However, because most of the ancient books that have been handed down are ancient books, it is difficult for modern people to understand the nouns and meanings of the ancients, so now we only have a superficial understanding of the six-yao prediction. There are many people, but very few can actually use it correctly. The advantage of the Six Yao Prediction Technique is that it can predict small and major events in life accurately to the day they will occur. The disadvantage is that it is difficult to predict a person's fate continuously. 3. Plum blossoms are easy to count. Plum blossoms are easy to count. The prediction technique of plum blossoms is easy to count. It was created by Mr. Shao Kangjie in the Song Dynasty. It uses the combination of eight trigrams to create a balance and effect to determine the good or bad of things. The method of making hexagrams for the easy number of plum blossoms is special, including the hexagram starting method for numbers, time, hexagrams for objects and external factors. Professor Liu Heng also classified the word prediction technique as the prediction method for the easy numbering of plum blossoms. The characteristic of Mei Yi is that it is flexible in starting hexagrams and making judgments accurately and quickly. The disadvantage is that if you predict things for more than twelve years, you cannot predict changes in things every year. 4. The prediction technique of Qi Men Dun Jia. The legend of Qi Men Dun Jia was received by an old man in Xiapi Bridge by Zhang Liang in the Han Dynasty. Among them is the book Qi Men Dun Jia. Qimen prediction is divided into yin and yang according to the winter solstice and summer solstice, each in charge of 9 Qimen disks, Qimen disk is divided into eight houses, each house has a sky disk (nine stars), a land disk (eighth house) and a human disk (eight gates). , Qiyi (heavenly stems), determine the good or bad of things based on the heaven, earth and people, and determine what things are measured through the combination of Qiyi. Since there are few versions of Qi Men Dun Jia circulated in ancient books, it was traditionally used to select the timing and direction of troops. Now it has been adapted into a prediction technique. In the theoretical system, it lacks sufficient functional relationships, so the system is not rigorous and the prediction accuracy is relatively low. Low. There are also those who use "magic magic" as a guise to deceive people. The advantage of Qimen's prediction technique is that it can analyze a matter into eight aspects, make the judgment more specific, and combine time and space. The shortcoming is the lack of theory for predicting long-term transit. 5. Onomastics Onomastics has existed since ancient times, but it has not formed an independent prediction system. In modern times, some people created nomenclature, which was then spread to Japan and then to the mainland. Naming science uses the stroke combination of a person's name, which is divided into heaven, personality, place, and 81 numbers of good and bad rules to analyze and predict the good and bad luck of a person's name. The good and bad luck of the name determines the person's destiny. Name science is simple and easy to understand and has a high accuracy rate. The advantage is that it can predict a person's life destiny based on the name, but the disadvantage is that it cannot be accurate for every year. 6. Feng Shui Feng Shui is an academic study of the identification and selection of the natural environment. It advocates conforming to nature. If people conform to the natural living environment, they will get good fortune. If they deviate from the natural operating environment, they will get misfortune. Feng Shui mainly includes Yang Zhai Feng Shui (home Feng Shui, company Feng Shui) and Yin Zhai Feng Shui (that is, the Feng Shui combination of ancestral graves). Yang Zhai Feng Shui is further divided into outdoor Feng Shui and indoor Feng Shui. They are consistent in Feng Shui regulations.