What is the ancient "blood drop"? Really scientific?

In ancient times, if you don't agree with a word, you will drop your blood to recognize your relatives. So, what is the ancient blood betrothal? Is it really scientific? Today, let's take a look at past lives, an ancient bride with blood, and explore the secrets together.

Blood-dripping parent-child relationship was founded in the Three Kingdoms period, which has always been regarded as the only magic weapon of parent-child relationship by the ancients, and no one has ever doubted it. Even in the forensic works of the Song Dynasty in China, this ancient paternity test method was recorded. In fact, there are two ways to recognize relatives in ancient times, one is called bone dripping method, and the other is called blood merging method.

The method of combining blood is often seen in TV series, that is, both blood relatives are living, and the blood stabbed by the two people is dropped in a vessel to see if it is integrated. If they are integrated, they are related by blood. In ancient times, simplicity was the most common. However, the fact is that red blood cells in the blood only have cell membranes. Because of osmotic pressure, red blood cells will absorb water and burst in clean water, so they are integrated with the naked eye. In fact, they are only mixed together because of the broken red blood cells, and they are not really integrated. So in this way, regardless of blood relationship, the blood drops in the water seem to be merged in the water.

The bone drop method is more pit, that is, dropping the blood of the living on the bones of the dead to see if there is any infiltration. If it infiltrates, it means that the living and the dead are related. However, the fact is that whether the bone is preserved in the open air or buried in the mud, its soft tissue will rot and then dissolve and disappear. Without the protection of skin, flesh and other soft tissues, the bone surface will be corroded and brittle, and blood, water and urine can be dripped in. Therefore, the ancient bone dripping method is even more unscientific. This bone-breaking method is completely coincidental. Only water and liquid can penetrate into the bone to some extent, but blood drips on the bone because its color looks more obvious. So the ancients thought this method could be verified.

According to Nan Shi, Xiao Zong, the son of Xiao Yan in the Southern Dynasties, did something to recognize relatives. The mother of this filial piety was originally Dong's concubine, and later she was attracted. Unexpectedly, Xiao Zong was born just seven months after he entered the palace. The palace has always believed that filial piety is not Liang Wudi's own. When Xiaozong grew up, he stripped Dong Hunhou's tomb and adopted a bone pendant to recognize his relatives. Sure enough, his blood penetrated into Dong Hunhou's bones. He was still dubious about this, so he killed his son in cold blood and dropped blood on his bones. This time, he still infiltrated, so he was convinced. Later, Xiaozong defected to the Northern Wei Dynasty and changed his name to Xiao Huan, and said that he would mourn for Dong Mianhou for three years. Whether Xiaozong is Dong Hunhou's own son has always been a mystery.

In short, the ancient blood betrothal is not reliable at all. In ancient times, I really don't know how many unjust cases were produced, and I don't know how many real murderers were spared.