The "inheritance, multiplication, comparison, and response" in "Zhou Yi" refers to the relationship between the two related lines within the hexagram, which can be summarized as the repulsion of the same sex and the attraction of the opposite sex.

(1) The so-called "inheritance" is the meaning of bearing, bearing and supporting.

Just like the horse-drawn carriage in ancient times, it was used to carry passengers. Where the next line closely follows the upper line, it is called "inheritance". It mostly refers to the yin and yang, symbolizing the weak and the strong, or the virtuous and the virtuous to assist the Ming Jun.

(2) The so-called "ride" is the meaning of driving, driving, and condescending.

Where the upper line multiplies the lower line, it is called the multiplication. It refers to the yin and yang and is called "Chenggang", which symbolizes that the subordinates bully the monarch, and the villain takes advantage of the gentleman, which means that it is not auspicious.

However, the yang is above the yang and does not say "multiplication", but calls it "according to", which is a matter of course, which shows the idea of supporting yang and suppressing yin in the Book of Changes.

(3) The so-called "comparison" is the name of two adjacent families, which means to be next to each other and shoulder to shoulder. It's like a good friend who walks side by side with you. If the two sides are one yin and one yang, and opposites attract, they are closer.

However, it should be noted that if there are two adjacent lines, one is yin and the other is yang, then the good is "compared". If the rigidity is compared to the rigid or the soft is compared to the soft, there is no mutual affection.

In short, where yin and yang meet as friends, if yang meets yang or yin meets yin, they become enemies.

(4) The so-called "should" means correspondence and conformity. It refers to the corresponding correspondence between the positions of the upper and lower hexagrams. It's like an alliance, not together, but responding to the call. There is a correspondence between the beginning and the fourth, the second and the fifth, and the third and the above.

It should be a kind of cohesive and supportive, and it is of course a good thing to have a response. However, this correspondence should be observed from the perspective of "the same sex repels each other, and the opposite sex attracts".

Generally speaking, if the two lines in the corresponding position are one yin and one yang, they can become yin and yang; If it is two yang or two yin, it constitutes a mutually exclusive relationship.

(5) Zhongzheng

Among the six lines, the first, third, and fifth lines are the yang position, and the second, fourth, and sixth lines are the yin positions. If the yang is in the yang position and the yin is in the yin position, it is in the position and auspicious; On the contrary, if the yang is in the yin position and the yin is in the yang position, it is called inappropriate and fierce.

The so-called "middle" refers to the second line of the inner hexagram and the fifth line of the outer hexagram in the six hexagrams, because in the middle of the three hexagrams, it is called "Zhong", also known as "Dezhong".

The so-called "positive" means that the odd number of the square number belongs to "yang", and the even number belongs to "yin", so in the yang position of the odd number, it should be yang; In the even-numbered yin position, it should be the yin; This is called "positive" or "in place".

The yin line is located in the second position, and the yang line is located in the fifth position, which is both neutral and positive, which is called "zhongzheng". It is a symbol of beauty in the Book of Changes.