Background introduction Zheng Mengzhu is a 32-year-old woman who is married and wants to have a child of her own. After several failed attempts to conceive naturally, she opted for in vitro fertilization. Reasons for choosing in vitro fertilization First of all, Zheng Mengzhu chose in vitro fertilization because of her age and health. Although 32 years old is not very old, as women grow older, their chances of conceiving gradually decrease. In addition, Zheng Mengzhu’s weight is higher, which also