What is the strategy of divination in the Book of Changes?

Zhouyi is a textbook compiled by diviners in the Zhou Dynasty, which is equivalent to the combined edition of elementary school arithmetic and natural history. "Bu" is Taibu, an official in charge of astronomical divination history books. The word "Yao" is an official of calculus, statistics, analysis and reporting. Divination Strategy is a method of calculating sixty-four kinds of divination with fifty yarrows. At that time, there were three calculation methods of divination strategy, namely, Lianshan, Huizang and Zhouyi. "Lianshan" uses 97 strategies and 8 measures; Return to Tibet uses 36 strategies and three "strategies". These two tactics are said to have been lost in Han areas! Horses were lost in Confucius' time. Therefore, Confucius said that we should make demands in the wild. At that time, the minority wizards were still using the strategy of linking mountains and returning to Tibet. "Strategy" is an algorithm to divide calculus with yarrow. If there is no yarrow, it will be "helpless." The tactics in the Book of Changes were the calculation method of fifty yarrows used by officials at that time. The deduction process is as follows: Fifty yarrows only use forty-nine yarrows. Divide the forty-nine roots into two parts at random, and take out one and give it to the other. In other words, only 48 people actually participated in divination. Count two yarrow fours at a time, and the remainder of the two can only be one pair of three, two pairs of two, or four pairs of four, so the total remainder is either four or eight. Don't use remainder. For the remaining 44 or 40, repeat the above method (one divides into two, one divides into four, and is odd), and remove the remainder 4 or 8, leaving 40 or 26 or 32. Again, the rest are 26, 32, 28, 24. This is the mystery of using numbers in the great derivative: 48 is divided into four parts for three times, and the remainder is eliminated, only four numbers can be produced: 36, 32, 28 and 24. Divide these four numbers by four to get the numbers of Lao Yang Nine, Shaoyin Eight, Shaoyang Seven and Laoyin Six. These three changes produced the first concept of hexagrams and paintings. Then repeat "three changes and five times" to get two, three, four, five and five. This is a six-pointed star changed from eighteen.

In the Zhou Dynasty, divination officials performed divination in this way. Why don't they use copper coins for divination? First, there were no copper coins. They didn't use coins, knives, cloth coins, coins and so on! Second, officials perform divination. First, the main purpose of divination is to teach "students" arithmetic. The important parts of the Book of Changes are the number of nature, the number of heaven and earth, the number of headlines, the number of gossip, the fixed number and variables ... Based on the decimal number principle of the number of geese, it is not difficult to understand the mechanism of its usage of fifty, as well as its complicated procedures and meticulous etiquette. Isn't it easy to say yi? Is it necessary to do such complicated divination? In the eyes of modern people, it is indeed "backward"! How convenient it is to shake out copper coins, machines and computers, right? How popular! How simple! Everyone will! Everyone can be an official! Can these be based on the calculation principle of the number of heaven and earth and the number of big derivatives in the Book of Changes? The "divination strategy" in the Book of Changes is nothing more than the divination official of the Zhou Dynasty teaching students arithmetic, aiming at cultivating students' calculus ability, and cultivating students with "perseverance" into divination people, with the state paying for them, without going to the streets to make a living!