Where is Wu Zetian's birthplace?

Historians in China have different opinions about the birthplace of Wu Zetian. One said that she was born in Chang 'an (Xi 'an, Shaanxi); He was born in Lizhou (Guangyuan, Sichuan). In the late 1950s and early 1960s, Guo Moruo made an in-depth study and textual research on the birthplace of Wu Zetian. After textual research, Guo Moruo is convinced that Wu Zetian was born in Guangyuan.