And are both people that the emperor likes, but why don't they have children?

When Su Daji was brought into the palace by Shang Zhouwang, Shang Zhouwang was already very old. It is said that he is over sixty. At this age, it is difficult for men to have fertility. Su Daji shouldn't raise children alone. Xi Shi's purpose is only to confuse Fu Cha, the king of Wu. She married Fu Cha on a mission, not because of love, and naturally she didn't want to have his children. So under such circumstances, even if they are deeply loved by the emperor, it is difficult to have children.

The phenomenon of concubines vying for favor in the harem has never been less. Many children will be stillborn and it is difficult to be born. Even if they are born, some of them have been poisoned and their chances of survival are slim. This is also one of the reasons why Heshi has no children.

Shang Zhouwang and Focha are both people who have too much sex. Their fertility may be problematic, so it is difficult for people to conceive their children. Shang Zhouwang and Empress Jiang were also very loving when they were young, but Empress Jiang did not give birth to several sons for Shang Zhouwang. Shang Zhouwang had few children, but he couldn't when he was young. How can he have children when he is old?

Shi is Vietnamese, and Fu Cha, the king of Wu, is somewhat wary of her. I don't think she will be given a chance to have her own child. As an emperor, you should have a sense of crisis and vigilance. He can't trust stone completely. Although he loves her, he is ready.

In fact, the more favored women in the harem are, the harder it is to have children. Being pampered attracted the envy and jealousy of many concubines. Once pregnant, there will be many people eyeing your stomach. They dream of letting your children run away. It's really not easy to have a baby!