What is the origin of the name "Zhao" in history?

In the 13th year of Tianbao (754), Emperor Xuanzong of the Tang Dynasty added "Great Sage and High Road, Emperor Xuanyuan of the Golden Que" to the Taoist priest. When I arrived in Song Zhenzong, the worship of Taoism reached another climax. I not only sealed the name of the Holy Father, but also named him Zhao, saying that "the Holy Father has protected the Buddha in Gao Ling Road for nine days". All mortal names, titles and articles should be taboo about the word "Xuan Lang". The ceremony of worshipping Taoism is unprecedented and complete, and the image of Taoism is becoming more and more abundant. The image of the Buddha in the Yuan Dynasty was stereotyped, so the great development of Taoist art in the Song Dynasty came directly from the advocacy of the supreme ruler in the Song Dynasty.