Everyone knows that close relatives can't get married, but why do Japanese strongly advocate close relatives to get married?

First, Japan is still an emperor system.

Japan advocates consanguineous marriage, because Japan still adopts the emperor system. For the Japanese royal family, it is popular for them to get married by close relatives, and many royal families also marry their own sisters. There is nothing wrong with the offspring they gave birth to after getting married today, so the Japanese people will do the same. After a long time, although I know that this is not good for future generations, I will not pay special attention to it.

Second, the origin of Japanese consanguineous marriage

Anyone who knows more about history knows that during the Tang Dynasty, our country was relatively good in many aspects, especially in diplomacy, and it also developed to a top level. There are also many contacts with Japan, so the Japanese saw the habit of China's close relatives getting married at that time, so they came to learn from our country and brought these customs back to China. But later, the law of our country stipulated the custom of prohibiting consanguineous marriage. But nothing has changed in Japan, so this custom has been passed down to the present.

Third, why did close relatives get married in ancient times?

In ancient China, some nobles advocated consanguineous marriage, because if they reconciled with the emperor, they could consolidate their position and add some glory to the family. Therefore, many people in the harem will try their best to get their families into the palace. Moreover, in ancient times, people thought kissing each other was a better thing. I think it can guarantee the family lineage. I won't let my position pass on to others, so people at that time admired this kind of marriage.

At that time, people have found that children born of close relatives are likely to have family hereditary diseases, but people didn't realize it at that time. In the 1980s, people realized this problem and created conditions for not getting married.