Wu Zetian was born in 624, and Li Zhi died in 683 at the age of 55. According to this calculation, Wu Zetian is basically 60 years old and has no fertility, even if she wants to have children.
Then let's take a look at Toy Boy of Wu Zetian. Wu Zetian had a Toy Boy who was a physician, but the physician was not very strong and could not meet the needs of Wu Zetian, so Wu Zetian gradually ignored him. Although he played Toy Boy as a warm-blooded young man, Wu Zetian is already a grandmother and doesn't have that kind of physical quality.
Apart from physical reasons, Wu Zetian sought Toy Boy only to solve her physical problems and vent her emotions. In the patriarchal society at that time, she must have the same supreme status as men, and she also hoped that everyone would listen to her and believe in her.
Which king in ancient times did not have his own three palaces and six courtyards? She will take some contraceptive measures herself. Although she is infertile, it is better to be on the safe side. In case of pregnancy, it will be very troublesome and embarrassing. There are many Toy Boy's that show their supreme status and are more symbols of power. Therefore, it is also her own psychological reason that she owns Toy Boy more.
In 705 AD, Wu Zetian fell ill, leaving a harvest of wisdom around her. The Zhang Zongchang brothers came to serve themselves and even gave them politics. Then, the Dragon Coup took place, and Wu Zetian was forced to cede the throne to Li Xian, and Li Tang was restored.
Not long after, Wu Zetian died, ending her gorgeous life.