Cao Guifen is one of many early marriage troops. She got married at the age of fourteen and gave birth to her eldest daughter Wang Daya at the age of fifteen. In the next ten years, she became a childbirth machine. Until her husband accidentally fell off a cliff and died due to hunting, she gave birth to six children in total. Except for the two who died prematurely due to illness and accidental death, the other four survived smoothly. However, even though she worked so hard to give birth to her husband's family, her status was still very low and she was scolded by her husband at any time. The reason was that, including the two children who died prematurely, Cao Guifen gave birth to girls and was unable to complete the important task of inheriting the family line for her husband's family.