Half the Mountains and Rivers, Half the King

The betrayal of my childhood sweetheart is heartbreaking, but what if I was born in the royal family? After experiencing all kinds of hardships, I thought everything would be settled and I could stay with him, but I found out that I have been at the center of other people's calculations. Naturally, I have to be ruthless. The one who takes revenge, seizes the heir, fights and finally looks down on the world is the real winner!