Zhào is Wu Zetian's maiden name, just like the photo. Wu's photo refers to the sun and the moon flying in the sky and shining on the earth. Zhào is an alternative word for "qi". Due to the taboo of Wu Zetian's maiden name, later generations wrote Qi as Qi, that is, the radical "Sun and Moon" was changed to "Mu Zi".
Extended data
The origin of bi and bi.
According to the history as a mirror, volume two hundred and four records:
Then the first year (Geng Yin, AD 690) was given by heaven.
Ye, November, Geng, arrived in southern Japan. The queen mother enjoys the Vientiane shrine and forgives the world. Zhou Zheng was first used, and November of the first year of Yongchang was changed to the first month of the first year, December was the twelfth month, and the first month of summer was January. There were two queens after Zhou and Han, and three queens after Shun and Yu. The descendants of Zhou and Sui were the same as those of other countries.
Feng Ge Feng Ge Assistant Minister Hedong lived in Qin Ke, and transformed twelve words such as "Heaven" and "Earth" into offerings, which Ding Hai did. The queen mother changed the imperial edict system from "Qi". Qin Ke, the son of the Queen Mother, comes from her father and sister.
It means that a courtier named Zong, whose official position is assistant minister of Fengge, is a relative of Wu Zetian (the son of her father and sister) and dedicated the word "Wan" to Wu Zetian. Most people often misunderstand that "qi" is a word created by Wu Zetian, but it is not.
Because there was a taboo in ancient times, that is, the names of royal relatives could not be called or written casually, so later generations wrote "Bi", that is, the word "Sun and Moon" was rewritten as "Mu Mu", and the word "Bi" appeared. It was not until the end of the Ming Dynasty that the "head" in the book Zhengzitong written by Zhang Zilie was corrected under the item "Originally from the sun and the moon, not from the second eye".
References:
Baidu encyclopedia -e