First, there can't be men in the palace. In ancient feudal society, women's status was very low. For a married woman, once she enters the emperor's harem, a woman who is the emperor even to her death can't see the men outside without permission. Even ministers can't walk around the palace at will, let alone enter the emperor's harem, except to go to court in the palace every day.
In addition to the guards and eunuchs, the emperor is the only one in the palace at night, and ministers are not allowed to spend the night in the palace. If they violate this rule, they will be punished.
Second, it is difficult for Yu Ji to see her family all her life. For the emperor's concubine, although her position is prominent, if she is favored by the emperor in the palace, she will be like a duck to water. But if you want to see your family, if you are not very favored by the emperor and let the emperor let the concubine see her family despite the opposition of the courtiers, then the concubine can see her family.
Even when I see my family, I spend very little time with my family. Coupled with the difference between the monarch and the minister, my family and my concubine will be somewhat alienated because of their identity. However, for the ancient concubines, it would be a great favor if they could get the permission of the emperor to meet their families.
Third, women in the backyard of the deep palace will be "imprisoned" in the harem for the rest of their lives. For the ancient concubines, in fact, when they were concubines, they knew that they would be imprisoned in the backyard of the deep palace for the rest of their lives, but for these concubines, it is also a great honor to be a woman who can become an emperor. Not only can they bring glory to their families, but even their status will be different, so these concubines will be happy even if they never see their families.