The most common hernias we see are inguinal hernias in the inguinal region and femoral hernias slightly below, as well as hernias protruding from the belly button. In addition, some people who have had surgery for unfortunate illnesses may also have hernias of various sizes bulging out of the incision or even the intestinal stoma if the incision does not grow deep enough due to various factors such as weakness, coughing or suturing. All of these hernias are collectively referred to as extra-abdominal hernias. Of course, there is more to extra-abdominal hernias, and hernias can occur in any weak or defective area, such as white line hernia, lumbar hernia, etc., to name a few. So how does a hernia form? In the case of an extra-abdominal hernia it is mainly related to two factors: the strength of the abdominal wall and the intra-abdominal pressure. Our abdominal wall can be compared to a bucket or a sack full of intestines, and people often develop a hernia because the abdominal wall is locally weak, congenitally or acquired, or even defective; or because of the presence of high abdominal pressure, such as old cough, constipation, or long-term heavy work. Abdominal pressure and abdominal wall strength is like a spear and shield, healthy people spear is not sharp and the shield is strong enough, the intestines have no hole to drill; if it does not happen that the spear is too sharp and the shield is not strong, the intestines will take the opportunity to bulge, unimpeded. If the intestine is tolerated, the defect of the abdominal wall will gradually increase under the action of the intestine repeatedly entering and leaving and abdominal pressure. The hernia is as big as a ball, making it difficult to move and painful; some patients may also have a dangerous situation where the intestine suddenly gets stuck and cannot be retrieved, which is in line with the old saying: “If a small hole is not mended, a big hole will suffer”. As a physical defect, the only way to treat ventral hernia in adults is surgery. It doesn’t work with potions or qigong practice. The traditional method is to close the hole by pulling together the tissues on both sides of the hernia defect with a thick thread, but just like the hole in the skin that has to be stitched to the drum, the missing piece is pulled up hard and may be torn apart before the day is out. Modern science has long had high-tech repair mesh, which is like using a new piece of cloth larger than the hole and placing it on the surface of the hole in the garment and sewing it firmly around it, so that we can expect the broken mirror to grow round.