The ruthless Empress We Zeitian (ruling for 40 years) is the basis of the legend establishing Luoyang’s ancient and continuing signifigance as a world-renowned center for tree peonies: they dared disobey her and she burnt them to the ground. They bloomed the next year in complete defiance. One version at: https://www.shenyunshop.com/blogs/blog/how-did-the-peony-become-the-queen-of-flowers