The arrival of Xie Na’s twins Xie Na is a well-known Chinese female host and singer who is loved. She and her husband Zhang Jie welcomed a pair of twins in 2017. This news attracted everyone’s attention and heated discussion. So where did the Xie Na twins come from? Application of in vitro fertilization technology It is understood that the arrival of Xie Na’s twins is related to in vitro fertilization technology. In vitro fertilization, also known as in vitro fertilization and embryos