In the modern concept of man, two people in one life is naturally a great thing, especially the birth of a dragon and phoenix fetus, but once the sin is suffered, the children and daughters are completely lost. Of course, there are also many luck factors in a child, if there is no human intervention, the average person will not necessarily have a birth, so every time a twin is born, relatives and friends will boast of their good luck.
However, this is enviable in modern times, but in ancient times, the situation is too different. The ancients were very evil to the twins, it was a symbol of inauspiciousness, and growing up at home could hurt the family, so the ancient twins were quite unlucky. If twins were born in ordinary people's homes, they wouldn't be loud. Give one of the children to someone else with a gentle hand. Cold hands can drown frail children directly or after birth. Moreover, in the eyes of the ancients, if both children were girls, neither of them would survive. Adults don't care that it's a small life in shape, they just deal with it casually.
What if the royal family gives birth to twins? It is reasonable to say that the children of the royal family are much more expensive than the common people, and twins should be treated favorably, but this is not the case. Most of the ancient emperors were three palaces and six courtyards, with groups of wives and concubines, and having children was not a problem at all, and the probability of twins was also high. However, in the history books that we can examine now, this event is rarely recorded. It is impossible to say that twins have not been born for thousands of years. So the twins are likely to be killed after birth, in the same way as ordinary people's families, but with more respect. It can be seen how important it is to have a few minutes of precocious puberty, which directly determines life and death.
So, aren't there twin royal children who have survived since ancient times? Of course not. For example, Zhu Ying, the King of Chugong in the Ming Dynasty, gave birth to twins named Zhu Huakui and Zhu Huabi. Among them, Zhu Huakui was sealed by Chu Shizi, and later took the throne of Chu King, and Li Zhu Huabi also had a knighthood, and the brothers were not lucky. However, there are also doubts about the brother's pedigree. They are thought to have been cultivated from the paraphyletic lineage. Because it is said that the former King of Chu had a hidden disease. Whether this matter was true or not was later inconclusive, and it became a major unsolved case in the Ming Dynasty.
In any case, the survival of twins in ancient times was indeed a rare thing, and royalty rarely heard of it. The royal family is more superstitious than the commoners, how can the relationship between the national fortunes not be despised? Moreover, the twins may be able to retake the concubines and kill them in the future, and even if they can stay, they must keep one, so as not to cause trouble in the future.