How to calculate fingers in ancient times?

1. When calculating, the information such as heavenly stems, earthly branches, eight diagrams and five elements are arranged into knuckles from the index finger to the little finger of the left hand according to certain rules, and then counted with the thumb in turn by reciting the formula, so as to achieve the purpose of matching heavenly stems, earthly branches, eight diagrams and five elements, which is convenient for residents to make predictions through the relationship between the five elements.

2. After the eight diagrams are arranged, the arithmetic unit can match the numbers with eight diagrams with formulas, which is convenient for "divination" and subsequent calculation. For example, the formula of gossip the day after tomorrow is "one counts hurdles, two counts Kun, three counts earthquakes, four counts points, five posts in the palace, six posts, seven against eight, and nine stays at the door". In addition, in addition to the correspondence between numbers and hexagrams, the eight-palace hexagrams system in Fang Jing based on acquired gossip also classifies the five elements into eight palaces.

3. In addition to gossip, ancient calculators also arranged heavenly stems and earthly branches (commonly known as "time horoscope") used for date, year, month and day, so as to calculate with five elements. After understanding the knuckle areas corresponding to the five elements, we classify heavenly stems and earthly branches as "A, B, C, D, E, Ji, Ke, Xin, Ren, Kui" and "Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Qi and Hai" respectively. See the arrow below for details. After the branches are arranged, the corresponding five elements will be clear at a glance, such as A and B belong to wood, C and D belong to fire, and there are water and ugly soil. ?

Extended content:

Fortune-telling refers to the act of speculating people's fate, which belongs to the category of metaphysics. The academic research of fortune telling is called Yi Xue, also called numerology. The theoretical core is Yin and Yang, Five Elements, Ganzhi and Fuxi Bagua, and the theoretical system is complex and profound.

In a narrow sense, fortune-telling refers to the calculation and prediction of birth (four-column, eight-character and six-column prediction); Fortune-telling in a broad sense includes fortune-telling, fortune-telling (palm reading), gossip, Taoism and so on. Ancient divination, black martial arts, divination, etc. All belong to the category of fortune telling. Fortune-telling in society generally refers to four-column and eight-character prediction. According to bamboo slips of the Warring States Period, fortune-telling began in the pre-Qin period.

References:

Baidu encyclopedia entry? Fortune-telling (the act of speculating people's fate)