Ai Cao was bound to a system under the Heaven's Will.
The skills provided by the system allow men to get pregnant, using their bodies as nourishment (upon death) to birth new life.
...
The Crown Princess said, "You must go and plead with the Emperor."
Song Tang opened his mouth, his voice dry, and said, "I will go and beg the Emperor."
As the "youngest daughter of the Song family," she was to see Master Song off on his final journey. If she didn't go, she would be branded as disloyal and unfilial, making it difficult for her to inherit the Song family's wealth.
The Crown Princess then lowered her hand in satisfaction. She poured Song Tang a cup of wine, raised it, and said, "I will take you to see the Empress Mother in a while."
Song Tang nodded. She looked down at the clear liquid in her glass, closed her eyes, and drank it all in one gulp.
The eldest princess continued, "The prince's luck has run out again." She mentioned to the crown princess that the prince had slipped and fallen into a plate as he was leaving the banquet. The crown princess listened and laughed, unable to suppress the smile on her lips.
The Crown Princess thought for a moment and said, "The Song family has also had some bad luck." She smiled at Song Tang, "Thanks to the blessing of good fortune."
Song Tang couldn't immediately tell whether the Crown Princess was referring to her younger brother, whom the Song family considered a lucky star, or to Song Tang herself. She thought for a moment and said, "Even a lucky star can't determine someone else's luck."
The Crown Princess smiled and nodded: "I heard you've done some things? Tell me about them."
Ai Cao whispered, "I'll add more wine for the Crown Princess." She leaned close to the Crown Princess and whispered about the Prince's private army and guards. The Eldest Princess nestled in the Crown Princess's arms and cheerfully added the rest of the wine for Ai Cao.
The Crown Princess lowered her eyes and stroked the Eldest Princess's hair, saying, "You'll be in charge of this. How long do you expect it to take?"
“One day,” the princess said. Her eyes shone like two stars. “If you want to train to be a fighter, it will take half a month.”
“There’s no rush, take your time,” the Crown Princess said. “Right now, only the Song family’s matter is urgent.”
She swirled her wine glass and said, "After finishing this glass of wine, His Majesty should also wake up from his warm paradise."