The Success Story of the Tongfang Maid

I am the lady's foot washer! The young lady married the King of Qin and became the Princess of Qin. The two were so affectionate and enviable! After the young lady became pregnant, she gave me to the King of Qin as a bed-warming maid. I thought I was finally done. But the night the young lady gave birth to her little prince. King Qin gave me to his soldiers. Later, it was spread by the world that the King of Qin loved his concubine as much as his soul, and promised that they would be the two of them for the rest of their lives, and they would never be different from each other. Little did I know that I, who was sent to a military camp and tortured to death, was pregnant. The reborn lady sent me to King Qin's bed a few hours ago. I chose to climb into His Majesty's bed! Gave birth to his only child. It is rumored that brothers died and succeeded each other. In this life, I want King Qin and his lady to die without a burial place!