this title in 655 no relation Zhào
Titles
During her life, and posthumously, Wu was awarded various official titles. Both hou (后) and huangdi (皇帝) are titles (modifications, or added characters to hou are of lesser importance). Born Wu Zhao, she is not properly known as "Wu Hou" (Empress Wu) until receiving this title in 655, nor is she properly known as "Wu Zetian", her regnal name, until 690, when she took the title Emperor.
no relation