Such an organ structure naturally causes the body shape and looks of the Han-Soyangin.
Pancreas is the largest organ, so the most evolved is the upper middle jiao, where the pancreas is, and all of its organs. The liver is relatively large, so the jiao where the liver is found, the lower middle jiao, and all of its organs, are relatively well developed. Lungs are relatively small, so its group, the upper middle jiao, is not so well developed. The kidneys are the smallest, so its group, the lower jiao, is least developed.

The Yol- and the Han-Soyangins both have the largest pancreas and the smallest kidneys, but they still differ in their external body shape, because the sizes of the two middle organs, liver and lungs, are reversed.

First of all, it is most important that, although both have the organ structure "pancreas > kidneys", the Yol-Soyangin is characterized by its largest pancreas, while the Han-Soyangin is characterized by its smallest kidneys. In other words, the Yol-Soyangin is a constitution caused by too large a pancreas, while the Han-Soyangin is a constitution caused by kidneys that are too small.
If these constitutions for some reason become ill, the organ's lack of equilibrium becomes worse, such that the large organs become stronger and the small ones weaker. From this pathological viewpoint of constitutional medicine, the large pancreas of the Yol-Soyangin becomes stronger and the main cure is to adjust that strengthened pancreas, while the small kidneys of the Han-Soyangin become weaker with illness, so the main cure is to adjust those weakened kidneys.

This can be easily expressed as below.

As shown above, although with the Yol-Soyangin the pancreas is largest, the same as with the second one, the two pancreases cannot be regarded as equally large. It is evident that the Yol-Soyangin's pancreas is larger than that of the second. Although with the Han-Soyangin the kidneys are smallest, the same as with the Yol-Soyangin, the two organs cannot be regarded as being equally small. The Han-Soyangin's kidneys are evidently smaller than those of the Yol-Soyangin.

In the order of organ size, the pancreas of the Han-Soyangin has the first place, same as that of the Yol-Soyangin, but the two pancreases cannot be regarded as being equally large, because as in the table above, the largest pancreas characterizes the Yol-Soyangin, while the smallest kidneys characterize the second one. So the Han-Soyangin has good digestion from its large pancreas, but is not so likely to become corpulent. He doesn't have such a huge pancreas as the Yol-Soyangin, who can digest anything well and easily becomes fat. The Han-Soyangin doesn't become fat in proportion to the quantity of food eaten, but has an average or thinner than average body shape. In other words, among fat people you won't find the Han-Soyangin.

Pancreas in the Han-Soyangin is the most developed, so the stomach, breasts, eyes, spine and muscles are also large. The chest is wide, but not so wide as with the Yol-Soyangin, and the breasts are large, but not as big as with the Yol-Soyangin. The Han-Soyangin has small lungs, different from the Yol-Soyangin, so the shoulders, organs of the lung group's upper jiao, are not so large as with the Yol-Soyangin. Liver is large, so the waist (in the liver group) is not as thin as with the Yol-Soyangin. The small intestines, navel, nose and hypodermal tissues are also relatively well developed. If the Han-Soyangin is relatively fat, he looks like a Taeumin because of the large liver and well developed hypodermals. If the Han-Soyangin is thin, he looks like a Soumin.

So, of the eight constitutions the Yol-Soyangin is most easily distinguished by his solidly developed upper body, but the Han-Soyangin is much more difficult to distinguish. Before subdividing into the eight constitutions, the four-constitution medicine often regarded this Han-Soyangin as Taeumin or Soumin, and therefore offered wrong cures which brought bad effects. Because of the smallest kidneys, the lower jiao, where the kidneys are, and its organs, namely the large intestine, sex organs, mouth, bladder and bones, are the weakest and least developed.

When we divide the face into the four jiaos, the mouth and chin belong to the lower jiao. The Han-Soyangin has the least developed lower jiao, so he has a small mouth with thin lips and a relatively pointed chin, although some may look different. Many people whose brilliant and sharp eyes are very impressive are Han-Soyangins, because eyes, in the pancreas group, are well developed. Although the Han-Soyangin doesn't have as large a pancreas as the first one, it is still a large organ, so he has good digestion and can eat anything well. From time to time he eats too much, which can cause such stomach illnesses as gastric dilation or gastroptosis.

From the small kidneys, there is often lumbar pain and lack of energy. The Han-Soyangin is the constitution that is most heavily influenced by too much sexual activity. In spite of this, he is more inclined toward sexual activity than the other constitutions. It's the Han-Soyangin who, when young, spends too much energy thinking about the opposite sex and suffers much from love sickness. This is a constitutional phenomenon caused by the excessively small kidneys.

If even a not very healthy and energetic Han-Soyangin, unable to bridle his sexual impulses, engages in sexual activity, that can be regarded as an essential phenomenon of the constitution with very small kidneys. From a constitutional viewpoint, people tend to cling to their weak side. For example, Soumin has a problem with digestion from the smallest pancreas, but he is the most discerning and finicky eater and often is a gastronome, in contrast to the Soyangin who eats anything without hesitation. Taeumin has weak breathing system from the smallest lungs and must be most attentive of smoking, but he smokes the most, unable to easily quit. Taeyangin has the smallest liver and must avoid drinking, but he is the most inclined to drinking.

The large intestine is in the kidney group, so it too is weak and the Han-Soyangin often has diarrhea. But this diarrhea is different from that caused by a small pancreas. If in this case the medicine for Soumin is mistakenly used, it doesn't work well.   The biggest difference between the Yol- and Han-Soyangins is that the second one is not so corpulent as the first, and has an average or thin figure. The Han-Soyangin doesn't have as great a physical strength as the Yol-Soyangin, but likes sports and easily develops his muscles and can strengthen his body through sports and exercise.

The Han-Soyangin can become remarkable mainly in such sports as taekwondo (Korean martial art), gymnastics with flying rings or on the bar. He, as a Soyangin, has a weak lower body compared to the upper body, so it is healthy for him to practise sports that use mainly the lower body, such as soccer, mountain climbing and skating. Also, the Yol-Soyangin is mixed with Taeyangin and the second with Taeumin, so the Han-Soyangin shows signs of the constitutional mixture of Soyangin and Taeumin. For example, the lungs are small organs with the Han-Soyangin, different from the Yol-, so he has a weak voice and it would be difficult for him to succeed as an opera singer. If he talks a lot, due to his small lungs his throat easily gets tired and often hurts.

The Han-Soyangin is characterized by not as strongly outstanding yang as with the Yol-Soyangin. Lee Jema developed the concept that of the four constitutions, Soyangin has the greatest warmth and strongest yang. But that more or less pertains to the Yol-Soyangin. The Han-Soyangin, mixed with Taeumin, has relatively less yang than the Yol-Soyangin.

The Yol-Soyangin has the strongest internal warmth due to its large pancreas, but even though it too is Soyangin, the second one doesn't have as strong an internal warmth as the Yol-Soyangin, so he is not as fond of cold things as the Yol-Soyangin. Among Han-Soyangins, some eat such warm character foods as honey and ginseng and often don't notice any side effects, in contrast to the Yol-Soyangin. Therefore they continue to eat such warm foods, mistakenly thinking that they are good for them. But the Han-Soyangin also has a yang constitution and has warmth inside the body. If he eats such foods with a warm character a lot, that will inevitably be bad for his health. He should refrain from such foods.

The Yol-Soyangin can't control his emotions well, so he is easily excited and angered. But although the Han-Soyangin also has that kind of character, the degree is less than that of the Yol-Soyangin. The Han-Soyangin, born with relatively strong Taeumin characteristics, often doesn't come across as direct or extroverted, but inactive and introverted. So among the Han-Soyangins there are sometimes people who don't look at all like a Soyangin.

Almost all Soyangins who by looks and temperament seem not like Soyangins are Han-Soyangins. So in practice the Han-Soyangin is the most difficult to distinguish. Of course, this explanation of the Han-Soyangin isn't absolute, but it's important that he has less yang than the Yol-Soyangin. It's natural, that the Han-Soyangin has various characteristics of Soyangin because he is, indeed, Soyangin. Among Han-Soyangins there are also people who have a very active and lively temperament and are much more extroverted than the Yol-Soyangins.

Soyangin is especially impatient and wants to do things quickly, so he often makes mistakes. He is easily excited and when touched, is easily brought to tears. Sometimes he hurts people around him with crude and imprudent words. If he cultivates himself well and conquers his impatience, he becomes very giving and altruistic and so is respected by many.
It's important to note that the criteria for such a temperament aren't absolute, but vary a lot among individuals. In other words, Han-Soyangins can show very different temperaments according to their degrees of Soyangin and of Taeumin. It can even on occasion be stronger than the Yol-Soyangin.

It's clear that the Han-Soyangin has characteristics of both Soyangin and Taeumin, and within this limit the proportions can vary with the individuals. But the proportion of strong Soyangin and weaker Taeumin is never reversed. A strong Taeumin and weak Soyangin isn't possible among Han-Soyangins. If the strong Soyangin characteristics are changed to weak Soyangin, and weak Taeumin characteristics are changed to strong Taeumin, that person is no longer Han-Soyangin, but Soyanginesque Taeumin, namely the Yol- Taeumin.