Qi Yitang transforms into the vicious female supporting character in the book, and readers' barrages will float in front of her eyes. In her previous life, she was infatuated with the male protagonist Xie Jingyu and was used to kill the emperor Xie Ling, causing the Qi family to be destroyed. Returning to the eve of the tragedy, she replaced Ruanjin Powder with Hehuan Powder and changed her destiny. She took the initiative to approach the seemingly cold emperor Xie Ling. In fact, Xie Ling has already been deeply in love with her. Qi Yitang relied on the barrage to predict the crisis, protect his family and those around him, tear apart the hypocritical original male protagonist, and resolve many turmoils in the palace. He and Xie Ling fell in love with each other, got rid of the tragedy of the original work, and joined hands to usher in a happy ending.