First-generation IVF: The woman's eggs are removed through ovulation, while the man's semen is taken, and the sperm and eggs are allowed to combine naturally in a laboratory environment without intervention. This is the assisted reproductive technology that the vast majority of fertility centers in China can do, and it is also the technology that has the highest number of cycles and is used most often.

Second-generation IVF: The main feature is that a single sperm can be put into the cytoplasm of the egg cell to fertilize the sperm and egg. In short, the "fertilization" process has been greatly improved. If the sperm and the egg are not able to take the initiative to complete the fertilization, then the doctor will have to use the "second generation of IVF technology" to help them out.

Third-generation IVF is the same as the first and second-generation techniques, before the doctor puts the embryo into the uterus. What's different about the third-generation technique? The difference is that before the embryos are put into the uterus, the doctors will diagnose the embryos genetically to see if there are any chromosomal disorders. In the end, only embryos that do not have a chromosomal genetic disorder are chosen to be placed in the uterus.

The fourth generation of IVF technology: The fourth generation of technology at Taiwan Maosheng Hospital uses PGS genetic screening to rule out chromosomal abnormalities that can easily be caused by women of advanced age, and then with the time-lapse embryo real-time image monitoring system, which helps score embryos through AI big data and the latest algorithms, as well as relying on the physicians' extensive medical experience to pick out the high-quality embryos for implantation to make the success rate of a single embryo increase. The success rate of a single embryo is increased.