My Concubine Is Reborn and I'm Pregnant. the Sick and Frail Prince Has Stood Up.

The concubine was reborn three years ago and had everything arranged in advance. Unfortunately, she still made the wrong move when it came to changing marriages. In this life, Jiang Yunqing took the "Jianzi Pill" and became fertile, and having sex with her also extended his life. The two sisters married into the Duke of Chu on the same day. Her eldest husband, who was said to not live to be twenty-eight, began to gradually improve, and Jiang Yunqing's belly grew bigger day by day...