Wu Shi said that it takes three things to tame a fierce horse, iron whip, iron handle and dagger. If iron whip can't subdue the horse, hit the horse's head with an iron bar. If not, cut the horse's throat with a dagger. She means, "a good horse can be ridden by a monarch, but it can also be used when tamed." What is the use of training unconvinced? " .

This reflects Wu Zetian's response to problems, her willingness to overcome difficulties with an iron fist, and her insistence that "I want to use it for me, otherwise I would rather destroy it", which also reflects the cruel and headstrong side of her character.