In the sixty-four hexagrams, each hexagram has six lines, representing different stages of the development of things. The combination of "beginning, second, third, fourth, end" and "lower, second, third, fourth, fifth, upper" is used to combine the time and the bits put together

In the sixty-four hexagrams, each hexagram has six lines, representing different stages of the development of things. The combination of "beginning, second, third, fourth, end" and "lower, second, third, fourth, fifth, upper" is used to divide the time. and bits are combined together to make; six and nine are used to represent the nature of things, yin or yang. When all things are born, time is more important, and when they end, position is more important.

The following is an excerpt from the original text:

Sixty-four hexagrams, each with six lines, from bottom to top, are called the first, second, third, fourth, fifth and upper lines respectively. It can be said that the "time" and "position" are combined, that is, the "time" of the beginning, second, third, fourth, fifth, and end, and the "position" of the lower, second, third, fourth, fifth, and upper Combined. Taking "beginning" and discarding "mo" means that the "time" at the beginning of all things is more important than the "position". Using "up" instead of "down" means the end time, and the "position" is more important than the "time". . Because the six major stages of time and position, 2, 3, 4, and 5 are common, only the beginning, end, and upper and lower are different, and the beginning and end represent "time", and upper and lower represent "position". Instead of taking the correspondence of beginning and end or upper and lower, it is said as beginning and upper. Although not relative, it cleverly covers time and position, both of which are used simultaneously.

In addition to the hour (first, second, third, fourth, fifth, last) and the position (lower, second, third, fourth, fifth, upper), you also need to understand the nature of things, whether they are yin or yang. Using two numbers to express the three essential elements of time, place, and nature has opened up the wisdom of "seeing two as three" for us Chinese descendants. In addition to positive and negative, up and down, and right and wrong, we often come up with a third statement, that is, "neither right nor wrong," "middle" and "difficult to say," which are actually very flexible.

The first two hexagrams of the Shang Sutra, the six lines of the Qian hexagram, are represented by the ninth day, the ninth day, the ninth day, the ninth day, the ninth day, the ninth day, the ninth day, and the ninth day. The yang line of "The Book of Changes" is represented by nine, so the Qian hexagram from the first line to the sixth line is all nine. The "time" of the first line is the most important, so we talk about the first line first and then the ninth line. The "position" of the last line is the most important, so first mention the upper line and then the ninth line. The remaining four lines first describe the nature, and then indicate the time and location. The Yin Yao of the "Book of Changes" is represented by six. The six lines of Kun Gua are Chu Six, Six Two, Six Three, Six Four, Six Five and Upper Six. The remaining sixty-two hexagrams are all yin and yang Yao intertwined. How to use two numbers to mark them requires a lot of practice to be very proficient.