Let’s look at the following Figure 1: Innate Bagua Chart.
Qian ☰, Dui ☱, Li ☲, Zhen ☳,
Xun ☴, Kan ☵, Gen ☶, Kun ☷.
The four hexagrams on the left side of the middle line are yang, from bottom to top, Zhen is the beginning of yang, and Qi is the extreme of yang; the four hexagrams on the right side of the middle line are yin, from top to bottom, Xun is the beginning of yin, and Kun is the extreme of yin.
upper and lower middle lines, 4 hexagrams above the middle line, the second line is yang, and the second line is 4 hexagrams below the middle line, and the second line is yin.
The top 2 hexagrams: Qian and Xun are the sky and the wind, and Xun is the movement of the sky.
The bottom 2 hexagrams: Kun and Zhen are the earth and thunder, and Zhen is the movement of the earth.

Figure 1: Innate Bagua Chart
Therefore, Qian, Xun, Kun and Zhen constitute the way of heaven and earth.

Figure 2: Organs in the body and the Book of Changes
Figure 1: In the innate Eight Trigrams diagram, the upper two hexagrams are Dui hexagrams and Kan hexagrams. The second line is Yang, Dui is in Laoyang and Kan is in Shaoyang. The two hexagrams in the lower part of
are Li hexagram and Gen hexagram. The two lines are Yin, Li is in Shaoyin, and Gen is in Laoyin.
Let's look at Figure 2: Organs in the body and the Book of Changes:
1. Four internal organs : It is composed of the combination of Li hexagram and Gen hexagram respectively, among which:
is Li Li on the top and Li on the bottom, forming Li hexagram, corresponding to the heart of the human body. Its five elements are fire, water and fire. The upper fire is composed of the five elements composed of 3 and 6 lines, the middle water is composed of the five elements composed of 2 and 5 lines, and the lower fire is composed of the five elements composed of 1 and 4 lines. Fire, water, fire, fire above and below are fire, and yin in the middle.
is above and lower Gen, forming 号 , which corresponds to the lungs of the human body. Its five elements are fire, water, metal, upper fire, water, and metal.
upper Gen and lower Li, forming Ben Gua , corresponding to the liver of the human body. Its five elements are fire, water and wood, upper fire, middle water and lower wood.
upper Gen and lower Gen, forming Gen hexagram , corresponding to kidney of the human body. Its five elements are fire water, water, water, water, and water.
Therefore, the liver belongs to wood, the heart belongs to fire, the lung belongs to metal, and the kidney belongs to water, which is determined by the five elements attributes composed of its 1 and 4 lines.
The hexagrams 2 and 5 lines corresponding to the four internal organs form the five elements water, and the five elements attributes composed of 3 and 6 lines are fire. Therefore, the characteristics of the four internal organs are external fire and internal water, external yang and internal yin.
The upper hexagram of the heart and lungs is Li, which is located in the chest and the appearance belongs to Yang.
The hexagram of liver and kidney is Gen, which is located in the abdomen and the appearance belongs to Yin.
2.4 internal organs: The upper hexagram is Li hexagram and Gen hexagram, and the lower hexagram is Dui hexagram and Kan hexagram .
is above and below, forming Kui Gua , which corresponds to the small intestine of the human body. Its five elements are metal, wood, fire, upper metal, middle wood, and lower fire.
upper Li and lower Kan form Wei Ji hexagram, corresponding to the human body's large intestine . Its five elements are metal, wood, metal, upper, middle, and metal.
upper Gen and lower Dui, forming loss hexagram , corresponding to the gallbladder of the human body. Its five elements are metal, wood, upper metal, middle wood, and lower wood.
upper Gen and lower Kan form Meng Gua , which corresponds to the bladder of the human body. Its five elements are metal, wood, fire, upper metal, middle wood, and water.
The hexagrams corresponding to the four internal organs, the five elements composed of lines 3 and 6 constitute metal, metal is the skin, and the wood composed of lines 2 and 5 constitutes wood. This wood is the nourishment. 1. The five elements composed of 4 lines are wood, fire, metal and water. Among them, the gallbladder is wood, the small intestine is fire, the large intestine is metal, and the bladder is water.
3. Four bodies: the lower hexagram is Li hexagram and Gen hexagram, and the upper hexagram is Dui hexagram and Kan hexagram. Contrary to the four internal organs.
upper Dui and lower Li, forming Ge Gua , corresponding to the pulse of the human body. Its five elements are wood, metal and fire, upper wood, middle gold, and lower fire.
upper Kan and lower Li, forming Jiji hexagram, corresponding to the tendons of the human body. The five elements are wood, metal and wood, upper wood, middle gold, and lower wood.
upper Dui and lower Gen, forming Xian Gua , which corresponds to the fur of the human body. Its five elements are wood, metal, metal, upper wood, metal, and metal.
The hexagrams corresponding to the four bodies, the five elements composed of 3 and 6 lines form wood, indicating that they have growth properties. 2. The gold formed by the five elements composed of 5 lines. This metal indicates that the main body of the four bodies is gold and the material is hard.
4. The logical relationship between the four internal organs, four internal organs and four bodies:
The four internal organs are the same as the upper hexagram of the four internal organs, both are Li hexagram or Gen hexagram, and the lower hexagram of the viscum is Dui hexagram or Kan hexagram.
The lower hexagrams of the four internal organs and the four internal organs are the same, both of which are Li or Gen hexagrams, and the upper hexagrams of the body are Dui or Kan hexagrams.
Insects nourish the organs, and the organs nourish the body.