There is no rule that girls cannot be named Zhao, but according to statistics, most parents will not name their girls Zhao. Zhao is the name given to herself by Wu Zetian, the only female emperor in ancient China. In order to show respect for celebrities, ordinary families will not give this name to their girls.
Why can’t girls be called Zhao
In ancient Chinese, the word Zhao means that the sun and the moon soar in the sky, and their radiance shines on the earth. It was a specially coined word by Wu Zetian one year before he proclaimed himself emperor.
The word Zhao has the same pronunciation as "photo". From the font and pronunciation, it is more masculine or masculine. Generally, folk names for girls tend to be soft and delicate.