Cao Guifen is one of the many early marriage army. She married at 14 and gave birth to Wang Daya at 15. In the next ten years, she became a fertility machine. Until her husband fell off a cliff due to hunting carelessly, she gave birth to six children. In addition to two people who died early because of illness and accident, the other four survived smoothly, but even though she worked so hard The reason is that Cao Guifen, including her two children who died early, gave birth to girls and failed to fulfill the important task of inheriting her husband’s family.