After Entering the Palace and Becoming a Demon Concubine, the Regent Went Crazy with Regrets

[The second male lead + the evil concubine who brings disaster to the country] [The sinister emperor + the beautiful concubine] She was a demon concubine who brought disaster to the country. She flattered the emperor and the powerful ministers above, but not the powerful regent. Everyone knows that she was once the confirmed concubine of the regent, but was robbed of her love by a woman brought back by the regent. From then on, she entered the palace and became the most favored concubine in the Sixth Palace. The emperor loved her so much that he was even willing to give her his kingdom just to see her smile. But he regretted it. On the night of the palace change, he put his sword on her neck and asked, "Why don't you just want to flatter me? Have you really fallen in love with him?" Her jade fingers dyed with danko lightly touched the blade of the sword, and her tone was understated: "Yes."