There are always different opinions about Yang Guifei's native place, but judging from the relevant historical materials, there is sufficient basis for textual research as Rong County. Among them, the most authoritative basis is Xu Zizhen's inscription "Yang Fei, Puning County, Rongzhou" in the Book of the Whole Tang Dynasty. The inscription says: "Yang Fei was born in Yangchong, Rongzhou, ten miles away from the city, with another name Yu Niang ..." Yangchong, Rongzhou, is now Yangwai Village, Shili Township, Rongxian County. Xu Zizhen served as a teaching assistant for four times during the Tianbao period of the Tang Dynasty, and was a contemporary figure with Guifei. He is familiar with her life experience, and his epitaph should be highly authentic.