The Supporting Actress Has Changed

Tang Xun recently discovered that the concubine he married had changed. She used to be evil secretly, but now she is evil openly. In the past, I only dared to stab villains behind their backs, but now I dare to drag a sharp knife to kill them. Tang Xun was wondering in his heart, when did she change her temper? It seems like that time... When he plotted against her Intention: