In this chapter, we learn that the siyou clan has a special ability to tame and impregnate animals. The siyou are also able to give birth to male and female children, and they are forbidden to have children by either male or female parents. This means that the offspring of a siyou and a female will not be able to have a male or a female husband. In other words, if the male siyou gives birth to a baby male, he will not get a wife, and if the female siyou has a baby female, she will not have a spouse. This is a very important lesson for us, because it means that we can learn from our ancestors.